anonymous
  • anonymous
6x^2+5-4=
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
Directrix
  • Directrix
What are the instructions for the posted problem?
anonymous
  • anonymous
its factoring diamond
Directrix
  • Directrix
There's an x missing here, I think --> 6x^2+5-4= --> after the "5." I don't know the diamond technique. I can factor by grouping.

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More answers

anonymous
  • anonymous
yeah factor by grouping :)
Directrix
  • Directrix
6x^2 +5x -4 What are two numbers that multiply to -24 AND add to 5 ?
anonymous
  • anonymous
2?
anonymous
  • anonymous
i think e. e
anonymous
  • anonymous
ithink anyways i have the other side of it.. its (2x-1)( )
Directrix
  • Directrix
Okay. What number times -1 will multiply to -4. -1*? = - 4 ? Help me out a little bit, and I can help you finish this. Okay?
anonymous
  • anonymous
1
Directrix
  • Directrix
-1 * 1 = -1 so that is not it.
anonymous
  • anonymous
1 can multiply -4
anonymous
  • anonymous
no wait wat?? i need to find a number that can multiply by 4?
Directrix
  • Directrix
Yes, so -1 times 4 = -4 which means 6x^2 +5x -4 = (2x-1)( ? +4 ) We're almost there. (2x) times what equals 6 x^2 ?
anonymous
  • anonymous
3x?
anonymous
  • anonymous
so its 3x-4?
Directrix
  • Directrix
Let's see if it works: 6x^2 +5x -4 = (2x-1)( 3x +4 ) ?? @chubbytots What do you think?
anonymous
  • anonymous
yep its right actually im answering a puzzle e. e
anonymous
  • anonymous
that's right @Directrix
anonymous
  • anonymous
\[3x^2-11x-20=\]
Directrix
  • Directrix
>>so its 3x-4? I did not get that.
anonymous
  • anonymous
its 3x+4
anonymous
  • anonymous
for da first group and the second group is?
Directrix
  • Directrix
(2x-1)*(3x-4) multiplies to 6x^2 -11x + 4 which is not the given problem.
Directrix
  • Directrix
Okay, let's try that.
anonymous
  • anonymous
6x^2 -11x + 4=(2x-1)(3x+4)
Directrix
  • Directrix
(2x-1)*(3x+4) = 6x^2 -3x + 8x -4 = 6x^2 + 5x - 4.
anonymous
  • anonymous
thats da second question and da second question is \[3x^2-11x-20=(3x+4)( ? )\]
anonymous
  • anonymous
i mean third**
Directrix
  • Directrix
I only saw the first problem.
anonymous
  • anonymous
i need the third problem cuz this is a pzzle v. v
Directrix
  • Directrix
3x^2 -11x - 20 = (3x+4) * ( ) What times 3x is equal to 3 x^2 ?
anonymous
  • anonymous
4x+3?
Directrix
  • Directrix
3x^2 -11x - 20 = (3x+4) * (x )
Directrix
  • Directrix
3x times 4x = 12 x^2 -->doesn't work
anonymous
  • anonymous
is it positve 3?
Directrix
  • Directrix
3x times 3 = 9x.
anonymous
  • anonymous
yes
Directrix
  • Directrix
Oh, you mean ( x + 3) as the second factor?
anonymous
  • anonymous
yes
Directrix
  • Directrix
(3x+4) * (x + 3 ) = 3x^2 -11x - 20 ?? 3x^2 + 9x + 4x + 12 Nope.
Directrix
  • Directrix
We could guess forever.
anonymous
  • anonymous
xDD i think lol and another one :O
Directrix
  • Directrix
Here is where we are: 3x^2 -11x - 20 = (3x+4) * (x ) We have to get -20 for the last term. 4 times what equals - 20 ?--->
anonymous
  • anonymous
i think its x-3?
Directrix
  • Directrix
4 times - 3 is not -20.
anonymous
  • anonymous
i mean 2?
anonymous
  • anonymous
i mean 5 sorry :o
Directrix
  • Directrix
4 times 5 is close but 4 times 5 does not equal -20
anonymous
  • anonymous
hmmmm
anonymous
  • anonymous
i think we need to make one of them a negative right?
Directrix
  • Directrix
Yes.
anonymous
  • anonymous
so-5?
Directrix
  • Directrix
Yes
anonymous
  • anonymous
its x-5?
Directrix
  • Directrix
3x^2 -11x - 20 = (3x+4) * (x - 5 )
Directrix
  • Directrix
That works.
anonymous
  • anonymous
yes
anonymous
  • anonymous
\[6x^2+11x-10=(2x+5)(?)\]
Directrix
  • Directrix
It's your turn to do this one. :) You come up with the factors, and I will check.
anonymous
  • anonymous
i'll be guessing dou
Directrix
  • Directrix
That's what I ended up doing because you didn't like factoring by grouping.
anonymous
  • anonymous
2x+1
anonymous
  • anonymous
lol actually this s factoring by grouping.. and i need to do factor diamond
anonymous
  • anonymous
its like two steps first is factoring by grouping and factoring diamond
Directrix
  • Directrix
That diamond thing is sophisticated guessing for me.
anonymous
  • anonymous
x. x so can we do factoring by grouping?
Directrix
  • Directrix
(2x+1)*(2x+5) = 4x^2 + 12x + 5 --> This is from your guess.
Directrix
  • Directrix
It didn't work.
anonymous
  • anonymous
2x-5?
Directrix
  • Directrix
I'm going to group.
anonymous
  • anonymous
is it 6x10?
anonymous
  • anonymous
6x10=60 ryt and wet going to make one of them a negative?
Directrix
  • Directrix
6 + 10 is not 11
Directrix
  • Directrix
15 and -4.
Directrix
  • Directrix
x^2 + 11x - 10 = x^2 + 15x - 4x - 10
anonymous
  • anonymous
5x+2?
Directrix
  • Directrix
This thread is so long that I have lost the problem.
Directrix
  • Directrix
(2x + 5) * ( 3x + 2) That is my last factoring problem on this puzzle.
anonymous
  • anonymous
so its 3x+2?
anonymous
  • anonymous
3x-2?
Directrix
  • Directrix
6x^2 + 15x - 4x - 10 = 3x(2x + 5) - 2(2x + 5) = (2x + 5) * ( 3x - 2). Right.
anonymous
  • anonymous
owoo that was brain storm >,<
Directrix
  • Directrix
The more of this stuff you do, the better you get. Except, I seem to be getting worse.
anonymous
  • anonymous
ohh yah sure cuz when im learning this i was lazy thats why i came up here >.<
Directrix
  • Directrix
What is the next factoring problem?
anonymous
  • anonymous
how abut this? \[7x^2+13x-2=(x+2)(?)\]
anonymous
  • anonymous
xDD under the typing box thou v v v v v
anonymous
  • anonymous
actually this factoring group so on this is the new lesson on our school e. e''''
anonymous
  • anonymous
and imto lazy about it
anonymous
  • anonymous
xDD uhh nope o. o
anonymous
  • anonymous
ohh well i better rap dis up cuz im gonna go early tommorow well thanks fo the help :)
Directrix
  • Directrix
Okay. See later on here.
anonymous
  • anonymous
ok byee

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