Inopeki
TT or across, teach me some algebra!!!



This Question is Closed

FoolForMath
Best Response
You've already chosen the best response.
2
who is TT ?

Inopeki
Best Response
You've already chosen the best response.
2
TuringTest

Anikate
Best Response
You've already chosen the best response.
0
what is x in this equation?
6+x=2

Inopeki
Best Response
You've already chosen the best response.
2
4

Anikate
Best Response
You've already chosen the best response.
0
good job that was basic

Inopeki
Best Response
You've already chosen the best response.
2
I have been studying basic algebra.

Anikate
Best Response
You've already chosen the best response.
0
x^2*x^3

Inopeki
Best Response
You've already chosen the best response.
2
x^5

FoolForMath
Best Response
You've already chosen the best response.
2
x+y=6
xy=7
can you find the x and y?

Anikate
Best Response
You've already chosen the best response.
0
(x^3)^2

Anikate
Best Response
You've already chosen the best response.
0
x=7+y

Inopeki
Best Response
You've already chosen the best response.
2
Anikate, he meant me.

Inopeki
Best Response
You've already chosen the best response.
2
FFM give me another one

Anikate
Best Response
You've already chosen the best response.
0
oh ok...

FoolForMath
Best Response
You've already chosen the best response.
2
\( a+b=9 \)
\( ab=11 \)
what is \( a \) and what is \(b\) ?

Inopeki
Best Response
You've already chosen the best response.
2
a=10
b=1
or
a=9b
b=9a

FoolForMath
Best Response
You've already chosen the best response.
2
Okay .. do you understand the difference between variable and constant?

Inopeki
Best Response
You've already chosen the best response.
2
variable is something you put instead of a number, right?

FoolForMath
Best Response
You've already chosen the best response.
2
More importantly, do you understand what in earth an equation means?

Inopeki
Best Response
You've already chosen the best response.
2
Excuse me?

FoolForMath
Best Response
You've already chosen the best response.
2
Precisely, variable is something that varies, so yes you are right :)

Inopeki
Best Response
You've already chosen the best response.
2
Were you just calling me stupid?

FoolForMath
Best Response
You've already chosen the best response.
2
No,lol :D you misunderstand my tone :)
So what is an equation ?

Inopeki
Best Response
You've already chosen the best response.
2
Its a line that states values of variables, i guess

FoolForMath
Best Response
You've already chosen the best response.
2
Hm. Let me explain.

FoolForMath
Best Response
You've already chosen the best response.
2
A equation has two parts, right hand side and left hand side.

Inopeki
Best Response
You've already chosen the best response.
2
I know that

FoolForMath
Best Response
You've already chosen the best response.
2
Anything right of the '=' sign is right hand side

Inopeki
Best Response
You've already chosen the best response.
2
I know, if you do something to the LHS you have to do the same to the RHS

Inopeki
Best Response
You've already chosen the best response.
2
yadda yadda, i know all that.

FoolForMath
Best Response
You've already chosen the best response.
2
Good :D

FoolForMath
Best Response
You've already chosen the best response.
2
Hey, that's not the right attitude towards mathematics :)

FoolForMath
Best Response
You've already chosen the best response.
2
anyways back to the problem our hand:
a+b=9
a−b=11

Inopeki
Best Response
You've already chosen the best response.
2
Yeah.

FoolForMath
Best Response
You've already chosen the best response.
2
we want to find a and b in terms of constants only.

Inopeki
Best Response
You've already chosen the best response.
2
So whats a constant?

FoolForMath
Best Response
You've already chosen the best response.
2
How could we do that ?

FoolForMath
Best Response
You've already chosen the best response.
2
constant is something which value is fixed.

Inopeki
Best Response
You've already chosen the best response.
2
Ok, so we can subtract a from both sides to get b on the top one, right?

FoolForMath
Best Response
You've already chosen the best response.
2
Why don't we add the equations?
like this \[ a+b+ab=9+11\]

Inopeki
Best Response
You've already chosen the best response.
2
Oh you want me to use both equations?

Inopeki
Best Response
You've already chosen the best response.
2
Well we can simplify that to a2=20, right?

Inopeki
Best Response
You've already chosen the best response.
2
Cause the b's cancel eachother out

FoolForMath
Best Response
You've already chosen the best response.
2
yes.

Inopeki
Best Response
You've already chosen the best response.
2
And for a we can just divide both sides by 2 getting x=10

Inopeki
Best Response
You've already chosen the best response.
2
a=10*

FoolForMath
Best Response
You've already chosen the best response.
2
Good, now what about b ?

Inopeki
Best Response
You've already chosen the best response.
2
a+b+a−b=9+11
a2 +b=20+b
Am i doing alright so far?

FoolForMath
Best Response
You've already chosen the best response.
2
no, you need to subtract this time

Inopeki
Best Response
You've already chosen the best response.
2
Subtract what exactly?

FoolForMath
Best Response
You've already chosen the best response.
2
a+ba+b=911

Inopeki
Best Response
You've already chosen the best response.
2
Is is (a+b)(a+b) or without parenthesis?

FoolForMath
Best Response
You've already chosen the best response.
2
second equation from the first.

Inopeki
Best Response
You've already chosen the best response.
2
Oh i see, this si the second one?

FoolForMath
Best Response
You've already chosen the best response.
2
(a+b)(ab) without parentheses

Inopeki
Best Response
You've already chosen the best response.
2
a+ba+b=911
2b=911
2b=2
b=1

Inopeki
Best Response
You've already chosen the best response.
2
See? I can do this!

FoolForMath
Best Response
You've already chosen the best response.
2
Very good :)

Inopeki
Best Response
You've already chosen the best response.
2
:D

Inopeki
Best Response
You've already chosen the best response.
2
Gimme something harder!

SimonS
Best Response
You've already chosen the best response.
0
If
ax  a = x  1
what is x equal to?

Inopeki
Best Response
You've already chosen the best response.
2
Divide both sides by x, right so far?

Inopeki
Best Response
You've already chosen the best response.
2
No wait,
ax  a = x  1
ax=x1+a
x=x1
Im stumped

SimonS
Best Response
You've already chosen the best response.
0
First, bring all the x terms to one side, and everything else to the other.

Inopeki
Best Response
You've already chosen the best response.
2
Im sorry, i havent studied factoring yet :/

SimonS
Best Response
You've already chosen the best response.
0
Ok. Here's the solution
ax  a = x  1
ax  x  a = 1
ax  x = a  1
x(a  1) = a  1
hence
x = 1

Inopeki
Best Response
You've already chosen the best response.
2
Ok, youll have to give me another one tommorrow so i can try :D