Question

Choose the correct product of (8x − 4)(8x + 4)

Answer 1

64x^2 - 16

Explanation:

Answer 2

64x^2 -16

Explanation:

(8x − 4)(8x + 4)

This is of the form

(a-b) (a+b) = a^2 -b^2 Difference of squares

where a =8x and b=4

(8x)^2 - 4^2

64x^2 -16