Tarik Z. answered • 05/08/13

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Hi Jamal,

Any time you have want to factor an expression in the form (a - b), you can always break it into

(sqrt(a) + sqrt(b)) (sqrt(a) - sqrt(b))

In this case, "a" would be 100x^2 and "b" would be 1.

So it can be factored to (10x + 1) (10x - 1)