Answer:
D
Step-by-step explanation:
Given
(5x + 3)(5x - 3)
Each term in the second factor is multiplied by each term in the first factor, that is
5x(5x - 3) + 3(5x - 3) ← distribute both parenthesis
= 25x² - 15x + 15x - 9 ← collect like terms
= 25x² - 9 → D
