![]() 12/11/2017 at 19:58 • Filed to: None | ![]() | ![]() |
I need halp, how do? I factored it and then had no idea what to do.
x 2 +13x+40 divided by x 2 +17x+72 all multiplied by x 2 +9x over x 2 -3x-40
This is how I factored it
(x+5)(x+8)( x 2 +9x)
over
(x+9)(x+8)(x-8)(x+5)
Which I then reduced to
x 2 +9x
over
(x+9)(x-8)
Of the four answers. One is like mine, but without the (x+9) and two others have just an x on top and the last answer just has a one on top. So what gives?
![]() 12/11/2017 at 20:22 |
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If you got (x^2+9x)/((x+9)*(x-8)), how can you reduce it further?
![]() 12/11/2017 at 20:35 |
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Factor an x out of your last step to make it x(x+9) over (x-8)(x+9) then cancel the (x+9) to leave you with the answer.
![]() 12/11/2017 at 20:42 |
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Holy fuck I’ve forgotten algebra.
![]() 12/11/2017 at 20:48 |
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![]() 12/11/2017 at 20:48 |
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I never learned it in the first place. As a musician, I only have to be able to count to three.
![]() 12/11/2017 at 21:02 |
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I have no idea.
![]() 12/11/2017 at 21:03 |
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What this guy said
![]() 12/11/2017 at 21:03 |
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Thanks!
![]() 12/11/2017 at 21:03 |
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Mother of god....... This is gonna be so handy!
![]() 12/11/2017 at 21:10 |
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No problem, I am not a math teacher but I play one on TV....
I wish I was on TV the pay would be better....
![]() 12/11/2017 at 21:40 |
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What happened to my he whole numbers? Shouldn’t there be a 72 in there somewhere to give you the other side of the equation?
![]() 12/11/2017 at 21:46 |
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There’s no other side of the equation. It’s just two fractions multiplied together. It was just factoring. Phryxes got the right answer. I just had to factor after my factoring.
![]() 12/12/2017 at 11:00 |
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Gotcha, it’s been awhile for me too for all the maths.