Question

Find the product. Simplify your answer.
(3q+1)(3q–1)

Answer 1

9q² - 1

Explanation:

given

(3q + 1)(3q - 1)

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

3q(3q - 1) + 1(3q - 1) ← distribute parenthesis

= 9q² - 3q + 3q - 1 ← collect like terms

= 9q² - 1