## Factor a^2-x^2-a-x

Simplificatation, evaluation, linear equations, linear graphs, linear inequalities, basic word problems, etc.
Jherek2
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Joined: Sat Aug 04, 2012 2:45 pm
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### Factor a^2-x^2-a-x

Hi, I have a problem: Factor a^2-x^2-a-x

I know what the answer is, but I don't understand how to get there...

I get as far as taking out the difference of two squares

(a+x)(a-x)-a-x

and now I'm lost as how to continue to get the answer which is (a+x)(a-x+1) it looks simple, but I'm baffled!

maggiemagnet
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Joined: Mon Dec 08, 2008 12:32 am
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### Re: Factor a^2-x^2-a-x

Factor a^2-x^2-a-x

I know what the answer is, but I don't understand how to get there...
They show here how to do this paired factoring:

a2 - x2 - a - x
(a - x)(a + x) - (a + x)
(a - x)(a + x) - 1(a + x)

Do you see how to get to the answer now?

Jherek2
Posts: 9
Joined: Sat Aug 04, 2012 2:45 pm
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### Re: Factor a^2-x^2-a-x

Ah, yes! Now I can see. I looked at that for so long, but for some reason it just wouldn't form in my head! Thanks very much.