Question

Multiply (x+7) (x-7)

Answer 1

foil the answer so it would be 2x-7x+7x-49 then you would combine like terms so the answer is 16x-49

Answer 2

(x+7) (x-7)
= x^2 - 49

using a^2 - b^2 = (A + b)(a - b)
hope it helps