Question

Which of the following is equivalent to the expression x2 – 16?

A. (x – 4)2
B. (x – 4)(x + 4)
C. (x – 8)(x + 8)
D. (x + 4)(x + 4)

Answer 1

Answer is B
`(x-4)(x+4)`

Explanation:

By expanding the expression:

`(x-4)(x+4)\\x^2-4x+4x-16\\x^2-16`

Answer 2

C is the right answer I think