Question

Find the product (x- 4) (x + 4)​

Answer 1

x² - 16

Explanation:

(x - 4)(x + 4)

Each term in the second factor is multiplied by each term in the first factor, that is

x(x + 4) - 4(x + 4) ← distribute both parenthesis

= x² + 4x - 4x - 16 ← collect like terms

= x² - 16

Answer 2

x^2 - 16

Explanation: