Posted by **Shelley** on Wednesday, November 24, 2010 at 5:01pm.

Can someone help me explain how factoring is used to solve quadratic equations? I can't find an explaination anywhere.

- algebra -
**Damon**, Wednesday, November 24, 2010 at 5:59pm
say for example

x^2-3x+2 = 0

factor that left side

(x-2)(x-1) = 0

That tells you that if x = 2, the function is zero, because (2-2)=0

It also tells you that if x = 1, the function is zero. (1-1) = 0

so the solution is x = 2 or x = 1

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