Philip P. answered • 05/15/14

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x

^{2}+ 5x + 6Factors to:

(x+3)(x+2)

Check:

(x+3)(x+2) = x

^{2}+2x + 3x + 6 = x^{2}+ 5x + 6"Re-FOILing" is just a way to check your answer to be sure you haven't made a mistake somewhere. It's good to do even when you know how to factor, just to be sure that a silly mistake hasn't crept in somewhere.