Question

1. Simplify (x2 + 16)(x2 – 16) = ?

Answer 1

(x²+16)(x²-16)
= x^4 - 16x² + 16x² - 256
= x^4 - 256

Answer 2

x
`x^(2)-256`

Explanation:

`x^(2) (x^(2) -16) 16(x^(2) -16)`

distribute

then add like terms