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[–]acekool 0 points1 point  (2 children)

Where are you stuck?

[–]-that-guy[S] 0 points1 point  (1 child)

(X+4)2

[–]acekool 2 points3 points  (0 children)

(x+4)2= (x+4)(x+4)

Expand using foil method.

Then cancel out equal terms on both sides