Question

Find the products of each (x + 4)(x − 4) and (x + 4)(x + 4)

Answer 1

(x + 4)(x − 4)

x^2 - 4x + 4x - 16
x^2 -16

Answer 2

(x + 4)(x − 4)


x^2-4x+4x-16


x^2-16


So (x + 4)(x − 4) = x^2-16


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(x + 4)(x + 4)


x^2+4x+4x+16


x^2+8x+16


So (x + 4)(x + 4) = x^2+8x+16

Answer 3

(x + 4)(x − 4)=x^2-16
(x + 4)(x + 4)=x^2+8x+16

Answer 4

Right nick.