Question

simplify the following expression

Answer 1

Answer:

16x^2-64

Step-by-step explanation:

(4x - 8)(4x + 8)

FOIL METHOD : First, Outer, Inner, Last

4x times 4x is 16x^2

4x times 8 is 32x^2

-8 times 4x is -32x^2

-8 times 8 is -64

16x^2 + 32x - 32x - 64

= 16x^2 - 64

Answer 2

Answer: A

the -8 X 4x cancels out with the 4x X positive 8 leaving 16x-64 because -8 times 8 is negative 64