Question

Which expressions are equivalent to 16x4 − 64? Check all that apply.

16x4 + 16x – 16x – 64


16x4 – 8x – 8x – 64


(4x2 + 8)(4x2 – 8)


16(x2 + 2)(x2 – 2)


4(4x4 – 8)

Answer 1

A. 16x^4 + 16x - 16x - 64

C. (4x^2 + 8)(4x^2 - 8)

D. (16x^2 + 209x^2 - 2)