Delete
Share
This Question is Closed
anonymous
Best Response
You've already chosen the best response.
0
\[(5x^2 + 3x + 4) − (2x^2 − 6x + 3)\]distribute the minus sign and get
\[5x^2 + 3x + 4 -2x^2 + 6x - 3)\]
anonymous
Best Response
You've already chosen the best response.
0
since you are only asked for B you job is to compute \(3+6\)
anonymous
Best Response
You've already chosen the best response.
0
yes
jim_thompson5910
Best Response
You've already chosen the best response.
1
Add up 3x^2 - 9
and 2x + 9
So
(3x^2 - 9) + (2x + 9) = ???
sabrinahaley97
Best Response
You've already chosen the best response.
0
5x^2 ?
jim_thompson5910
Best Response
You've already chosen the best response.
1
Sorry, I didn't see the first x
Add x, 3x^2 - 9 and 2x+9
(x) + (3x^2 - 9) + (2x + 9)
x + 3x^2 - 9 + 2x + 9
3x^2 + 3x + 0
3x^2 + 3x
jim_thompson5910
Best Response
You've already chosen the best response.
1
So after adding x, 3x^2 - 9 and 2x + 9, you will get 3x^2 + 3x, which is the total distance covered
sabrinahaley97
Best Response
You've already chosen the best response.
0
soo its 3x^2 + 3x
anonymous
Best Response
You've already chosen the best response.
0
add them up
\[x+3x^2 - 9+2x + 9\]
anonymous
Best Response
You've already chosen the best response.
0
yes
sabrinahaley97
Best Response
You've already chosen the best response.
0
thanks!
anonymous
Best Response
You've already chosen the best response.
0
they really reach for these "word problems" don't they ?
anonymous
Best Response
You've already chosen the best response.
0
they could have said "add the polynomials"
sabrinahaley97
Best Response
You've already chosen the best response.
0
LOLLL yess they do !! Can you guys do me onee more favor and just double check my work ?
jim_thompson5910
Best Response
You've already chosen the best response.
1
sure, what do you need to check
sabrinahaley97
Best Response
You've already chosen the best response.
0
ill write the 5 questions and show you my answers
sabrinahaley97
Best Response
You've already chosen the best response.
0
1. Simplify the following expression: (x − 8y) - (2x − 4y)If the final answer is written in the form Ax + By, what is the value of B?
2. Simplify: (4x − 6) − (5x + 1)
3. Simplify: (5x^2 + 3x + 4) + (5x^2 + 5x − 1)
4. Simplify: (4x − 6) + (3x + 6)
& You helped me with the other 2 questions so i just put the ones i did on my own but these were my answers
1. 4y
2. -x-7
3. 10x^2 + 8x + 5
4. 7x+12
jim_thompson5910
Best Response
You've already chosen the best response.
1
ok one sec
sabrinahaley97
Best Response
You've already chosen the best response.
0
alrighty :] Thanks!!
jim_thompson5910
Best Response
You've already chosen the best response.
1
#1
the form is form Ax + By
they want the value of B, so the answer cannot be 4y
jim_thompson5910
Best Response
You've already chosen the best response.
1
besides, -8y + 4y isn't 4y anyway
you lost a sign somewhere
sabrinahaley97
Best Response
You've already chosen the best response.
0
Im bad with my signs /: negatives and positives -.- so confusing
jim_thompson5910
Best Response
You've already chosen the best response.
1
think of it like this
-8 + 4
is the same as saying
you're 8 dollars in debt, but you paid off $4 of that debt, so you're now 4 dollars in debt
jim_thompson5910
Best Response
You've already chosen the best response.
1
so that explains how -8 + 4 = -4
jim_thompson5910
Best Response
You've already chosen the best response.
1
and why -8y + 4y = -4y
sabrinahaley97
Best Response
You've already chosen the best response.
0
so itd be -4?
jim_thompson5910
Best Response
You've already chosen the best response.
1
B is -4, yep
sabrinahaley97
Best Response
You've already chosen the best response.
0
oki
jim_thompson5910
Best Response
You've already chosen the best response.
1
# 2 is correct, so congrats on that
sabrinahaley97
Best Response
You've already chosen the best response.
0
thanks :]
jim_thompson5910
Best Response
You've already chosen the best response.
1
#3 is close
jim_thompson5910
Best Response
You've already chosen the best response.
1
but not correct fully
jim_thompson5910
Best Response
You've already chosen the best response.
1
4 + (-1) is NOT 5
sabrinahaley97
Best Response
You've already chosen the best response.
0
-3?
jim_thompson5910
Best Response
You've already chosen the best response.
1
you have 4 dollars
you add on 1 IOU
jim_thompson5910
Best Response
You've already chosen the best response.
1
you really have 4-1 = 3 dollars left (after you pay off the IOU)
jim_thompson5910
Best Response
You've already chosen the best response.
1
so that's why 4 + (-1) = 4 - 1 = 3
sabrinahaley97
Best Response
You've already chosen the best response.
0
oh alright ! i get it now.
jim_thompson5910
Best Response
You've already chosen the best response.
1
ok great
jim_thompson5910
Best Response
You've already chosen the best response.
1
# 4 is also incorrect
sabrinahaley97
Best Response
You've already chosen the best response.
0
sorry im blonde it takes a little bit.
jim_thompson5910
Best Response
You've already chosen the best response.
1
that's ok, just practice practice practice
and hair color is just skin deep...has nothing to do with intelligence
sabrinahaley97
Best Response
You've already chosen the best response.
0
Lol yeah , im guessing #4 is 7x-12
jim_thompson5910
Best Response
You've already chosen the best response.
1
-6 + 6 = ???
jim_thompson5910
Best Response
You've already chosen the best response.
1
-6 means you are $6 in debt
add on $6, so you are paying off $6
are you still in debt?
sabrinahaley97
Best Response
You've already chosen the best response.
0
nope itd be zero :o
jim_thompson5910
Best Response
You've already chosen the best response.
1
-6+6 = 0
sabrinahaley97
Best Response
You've already chosen the best response.
0
so the answers just 7x?
jim_thompson5910
Best Response
You've already chosen the best response.
1
so you'd have 7x+0 or just 7x
jim_thompson5910
Best Response
You've already chosen the best response.
1
you got it
sabrinahaley97
Best Response
You've already chosen the best response.
0
ok aha :]
jim_thompson5910
Best Response
You've already chosen the best response.
1
just watch out for the signs and try not to forget any
sabrinahaley97
Best Response
You've already chosen the best response.
0
Ill think of the whole dollar thing next time i come to the signs , Thank you so much ! ! :]
jim_thompson5910
Best Response
You've already chosen the best response.
1
that's how I grasp negatives when I stumble a bit, and you're welcome
sabrinahaley97
Best Response
You've already chosen the best response.
0
Ive always troubled negatives , ive been taking algebra 1 for 3 years now , and havent passed . Im working so much harder now ,
jim_thompson5910
Best Response
You've already chosen the best response.
1
have you thought of using money terms for negatives before? I'm just curious how your teachers have taught negatives in the past
sabrinahaley97
Best Response
You've already chosen the best response.
0
ive heard of it but it was never enforced.
jim_thompson5910
Best Response
You've already chosen the best response.
1
I gotcha, so they brought it up (maybe once or twice), but never really stuck to it
sabrinahaley97
Best Response
You've already chosen the best response.
0
nopeeeee
sabrinahaley97
Best Response
You've already chosen the best response.
0
Im trying to finish up my work for next week so im ahead so i can spend my spring break with my younger sister , would you mind helping me with Multiplying monomials?
jim_thompson5910
Best Response
You've already chosen the best response.
1
sure I can help
sabrinahaley97
Best Response
You've already chosen the best response.
0
Choose the correct simplification of the expression d^3 • d^5.
d
d^15
d^2
d^8
jim_thompson5910
Best Response
You've already chosen the best response.
1
what did you get
sabrinahaley97
Best Response
You've already chosen the best response.
0
the arrow represents the degree of the monomials incase you didnt already know lol.
and i think its d^15??
jim_thompson5910
Best Response
You've already chosen the best response.
1
^ means exponents, yes I know
and no it's not d^15
jim_thompson5910
Best Response
You've already chosen the best response.
1
if you are multiplying expressions with the same base, then you add the corresponding exponents
jim_thompson5910
Best Response
You've already chosen the best response.
1
example
x^2 times x^3 = x^(2+3) = x^5
sabrinahaley97
Best Response
You've already chosen the best response.
0
Alright that sounds a little better so d^8 ?
jim_thompson5910
Best Response
You've already chosen the best response.
1
because you can expand out the 'x' terms and you'll see 5 total x terms
jim_thompson5910
Best Response
You've already chosen the best response.
1
yep d^8
sabrinahaley97
Best Response
You've already chosen the best response.
0
alright you make this so much easier than the lesson lol
jim_thompson5910
Best Response
You've already chosen the best response.
1
lol glad to hear that
jim_thompson5910
Best Response
You've already chosen the best response.
1
glad it's finally clicking
sabrinahaley97
Best Response
You've already chosen the best response.
0
Choose the correct simplification of the expression (b^5)^4.
b^9
b^625
b^20
b
sabrinahaley97
Best Response
You've already chosen the best response.
0
b^20 ?
jim_thompson5910
Best Response
You've already chosen the best response.
1
you got ???
jim_thompson5910
Best Response
You've already chosen the best response.
1
perfect
jim_thompson5910
Best Response
You've already chosen the best response.
1
you're a total pro at this
sabrinahaley97
Best Response
You've already chosen the best response.
0
HA i wish!
jim_thompson5910
Best Response
You've already chosen the best response.
1
you're just not giving yourself enough credit
sabrinahaley97
Best Response
You've already chosen the best response.
0
Choose the correct simplification of the expression (3x)^4.
81x^4
12x^5
81x^5
12x^4
jim_thompson5910
Best Response
You've already chosen the best response.
1
raise each piece to the 4th power
sabrinahaley97
Best Response
You've already chosen the best response.
0
81x^4 ?
jim_thompson5910
Best Response
You've already chosen the best response.
1
so you raise 3 to the 4th power to get ____
jim_thompson5910
Best Response
You've already chosen the best response.
1
yep, you got it
jim_thompson5910
Best Response
You've already chosen the best response.
1
see you know this stuff
sabrinahaley97
Best Response
You've already chosen the best response.
0
haha slowly but getting it !! :)
jim_thompson5910
Best Response
You've already chosen the best response.
1
well as long as you get there, that's all that matters
sabrinahaley97
Best Response
You've already chosen the best response.
0
Choose the correct simplification of the expression (x^2y)^2.
x^4y^3
x^6y^6
x^4y^2
xy^4
jim_thompson5910
Best Response
You've already chosen the best response.
1
what did you get
sabrinahaley97
Best Response
You've already chosen the best response.
0
Havent even tried it yet lol .but im thinking the ^2 on the outside is going to distribute to the ones in the parenthese?
jim_thompson5910
Best Response
You've already chosen the best response.
1
yes that's one way of thinking about it
basically you raise each part to the 2nd power
jim_thompson5910
Best Response
You've already chosen the best response.
1
x^2 to the 2nd power ----> x^2 * x^2 = x^(2+2) = x^4
jim_thompson5910
Best Response
You've already chosen the best response.
1
y to the second power -----> y^2
jim_thompson5910
Best Response
You've already chosen the best response.
1
or you can multiply the exponents
multiply the outer by each of the inner
sabrinahaley97
Best Response
You've already chosen the best response.
0
so x^4y^2
sabrinahaley97
Best Response
You've already chosen the best response.
0
:] this isnt so hard
jim_thompson5910
Best Response
You've already chosen the best response.
1
no, it's not at all
just depends on how much practice you have and how you look at it
sabrinahaley97
Best Response
You've already chosen the best response.
0
Choose the correct simplification of the expression b^5 • b^4.
b
b^9
b^20
b^−1
jim_thompson5910
Best Response
You've already chosen the best response.
1
you got _____
sabrinahaley97
Best Response
You've already chosen the best response.
0
b^9 ?
jim_thompson5910
Best Response
You've already chosen the best response.
1
correct
sabrinahaley97
Best Response
You've already chosen the best response.
0
:DD !!
jim_thompson5910
Best Response
You've already chosen the best response.
1
you add the exponents
I'll brb
sabrinahaley97
Best Response
You've already chosen the best response.
0
3 more ,
sabrinahaley97
Best Response
You've already chosen the best response.
0
ok sounds good.
jim_thompson5910
Best Response
You've already chosen the best response.
1
no worries I'll be back in a few min and I'll help you with those 3
sabrinahaley97
Best Response
You've already chosen the best response.
0
Okay :D
jim_thompson5910
Best Response
You've already chosen the best response.
1
ok back
sabrinahaley97
Best Response
You've already chosen the best response.
0
Choose the correct simplification of the expression (d3)^5.
d^8
d^15
d^243
d
sabrinahaley97
Best Response
You've already chosen the best response.
0
d^15 right ?
jim_thompson5910
Best Response
You've already chosen the best response.
1
correct, assuming you mean (d^3)^5
sabrinahaley97
Best Response
You've already chosen the best response.
0
yes sorry i forgot the ^ x]
jim_thompson5910
Best Response
You've already chosen the best response.
1
no worries
sabrinahaley97
Best Response
You've already chosen the best response.
0
okay these last 3 .
sabrinahaley97
Best Response
You've already chosen the best response.
0
heres 2 of the 3
jim_thompson5910
Best Response
You've already chosen the best response.
1
and you got what for each
sabrinahaley97
Best Response
You've already chosen the best response.
0
How do i simplify them ?
sabrinahaley97
Best Response
You've already chosen the best response.
0
just add the exponents?
jim_thompson5910
Best Response
You've already chosen the best response.
1
(3d)^3
turns into
27d^3
jim_thompson5910
Best Response
You've already chosen the best response.
1
so
(3d)^3 * d
becomes
27d^3 * d
jim_thompson5910
Best Response
You've already chosen the best response.
1
and that becomes what?
sabrinahaley97
Best Response
You've already chosen the best response.
0
um. 27d^4
?
sabrinahaley97
Best Response
You've already chosen the best response.
0
alright i struggled a little bit
jim_thompson5910
Best Response
You've already chosen the best response.
1
now simplify the other expression
jim_thompson5910
Best Response
You've already chosen the best response.
1
that's ok, just keep practicing it and it'll come more easily to you
sabrinahaley97
Best Response
You've already chosen the best response.
0
the second one the exponents are just gonna get added to each other right ?
jim_thompson5910
Best Response
You've already chosen the best response.
1
no, when you square something that has an exponent, you are multiplying the exponents
jim_thompson5910
Best Response
You've already chosen the best response.
1
ex:
(3x^5)^2 ---> 9x^(5*2) = 9x^(10)
sabrinahaley97
Best Response
You've already chosen the best response.
0
3d^4
jim_thompson5910
Best Response
You've already chosen the best response.
1
so the exponents are different? or equal?
sabrinahaley97
Best Response
You've already chosen the best response.
0
equal
jim_thompson5910
Best Response
You've already chosen the best response.
1
so that means you go with C for the first one
jim_thompson5910
Best Response
You've already chosen the best response.
1
exponents are the same
sabrinahaley97
Best Response
You've already chosen the best response.
0
alright number 8 looks like mumbo jumbo...
jim_thompson5910
Best Response
You've already chosen the best response.
1
same thing applies to #8, it's just a bit more complicated maybe
jim_thompson5910
Best Response
You've already chosen the best response.
1
they want you to simplify as much as possible, then compare exponents for expressions 1 and 2
jim_thompson5910
Best Response
You've already chosen the best response.
1
(2y^2)^3 = 8y^(2*3) = 8y^6
sabrinahaley97
Best Response
You've already chosen the best response.
0
alright .
jim_thompson5910
Best Response
You've already chosen the best response.
1
(y^9)*(2y^2)^3
turns into
y^9 * 8y^6
sabrinahaley97
Best Response
You've already chosen the best response.
0
what about that y^9
jim_thompson5910
Best Response
You've already chosen the best response.
1
just added it back in so to speak
jim_thompson5910
Best Response
You've already chosen the best response.
1
I focused on simplifying (2y^2)^3 first
jim_thompson5910
Best Response
You've already chosen the best response.
1
then re-introduced the y^9 back in
sabrinahaley97
Best Response
You've already chosen the best response.
0
okay so the first one you just add the like terms now right?
jim_thompson5910
Best Response
You've already chosen the best response.
1
yep you add the exponents
sabrinahaley97
Best Response
You've already chosen the best response.
0
y^9 * 8y^6 = 9y^15
jim_thompson5910
Best Response
You've already chosen the best response.
1
the exponent is correct, but that 8 should stay the same
jim_thompson5910
Best Response
You've already chosen the best response.
1
so it's 8y^15
jim_thompson5910
Best Response
You've already chosen the best response.
1
silly typo though
sabrinahaley97
Best Response
You've already chosen the best response.
0
alright so 8y^15 for the first one ,
jim_thompson5910
Best Response
You've already chosen the best response.
1
now simplify the second one using the same steps
jim_thompson5910
Best Response
You've already chosen the best response.
1
(2y^3)^2 = ???
sabrinahaley97
Best Response
You've already chosen the best response.
0
4y^6
jim_thompson5910
Best Response
You've already chosen the best response.
1
(9y)(2y^3)^2
becomes
9y*4y^6
sabrinahaley97
Best Response
You've already chosen the best response.
0
13y^6
jim_thompson5910
Best Response
You've already chosen the best response.
1
you multiply the coefficients out front
jim_thompson5910
Best Response
You've already chosen the best response.
1
9*4 = 36
jim_thompson5910
Best Response
You've already chosen the best response.
1
and you add the exponents
1+6 = 7
sabrinahaley97
Best Response
You've already chosen the best response.
0
so 36y^7 ?
sabrinahaley97
Best Response
You've already chosen the best response.
0
that one was hard lol
jim_thompson5910
Best Response
You've already chosen the best response.
1
now compare
8y^15 to 36y^7
jim_thompson5910
Best Response
You've already chosen the best response.
1
its ok, it'll get easier over time
sabrinahaley97
Best Response
You've already chosen the best response.
0
the first ones exponents are greater than
sabrinahaley97
Best Response
You've already chosen the best response.
0
Alright this is my last one .
sabrinahaley97
Best Response
You've already chosen the best response.
0
thank god
sabrinahaley97
Best Response
You've already chosen the best response.
0
Part 1: Explain, using complete sentences, how to simplify the expression below.
Part 2: What is the simplified expression?
(3x^3y^4)(2x^2y^6)
jim_thompson5910
Best Response
You've already chosen the best response.
1
the coefficients are 3 and 2
what do you do with these?
sabrinahaley97
Best Response
You've already chosen the best response.
0
multiply them
jim_thompson5910
Best Response
You've already chosen the best response.
1
3 * 2 = 6 is your final coefficient
jim_thompson5910
Best Response
You've already chosen the best response.
1
now for each variable, you add the corresponding exponents
sabrinahaley97
Best Response
You've already chosen the best response.
0
so 6x^5 ?
jim_thompson5910
Best Response
You've already chosen the best response.
1
so for the x terms, you add the exponents 3 and 2 to get 3+2 = 5
5 is the final exponent for x
jim_thompson5910
Best Response
You've already chosen the best response.
1
so far so good, now do y
sabrinahaley97
Best Response
You've already chosen the best response.
0
well y doesnt have any numbers but every variable is equal to 1 , so would it be 2y^10?
jim_thompson5910
Best Response
You've already chosen the best response.
1
don't worry about the coefficient, that's been taken care of already
jim_thompson5910
Best Response
You've already chosen the best response.
1
just focus on the exponents for y
sabrinahaley97
Best Response
You've already chosen the best response.
0
so y^10 ?
jim_thompson5910
Best Response
You've already chosen the best response.
1
they are 4 and 6, they add to 4+6 = 10
jim_thompson5910
Best Response
You've already chosen the best response.
1
so all together, we get
6x^5y^10
sabrinahaley97
Best Response
You've already chosen the best response.
0
alright .
so thats the simplied answer?
sabrinahaley97
Best Response
You've already chosen the best response.
0
that was easier lol
jim_thompson5910
Best Response
You've already chosen the best response.
1
lol depends on how you look at it i guess
sabrinahaley97
Best Response
You've already chosen the best response.
0
Thank you so much for all your time helping me tonight .
jim_thompson5910
Best Response
You've already chosen the best response.
1
you're welcome