Question

4. Find the product. Simplify
your answer.
(5x + 1)(5x - 1)

Answer 1

25x² - 1

Explanation:

Given

(5x + 1)(5x - 1)

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

5x(5x - 1) + 1(5x - 1) ← distribute both parenthesis

= 25x² - 5x + 5x - 1 ← collect like terms

= 25x² - 1