Answer:
A
Explanation:
(3x + 5)² = (3x + 5)(3x + 5)
Each term in the second factor is multiplied by each term in the first factor , that is
3x(3x + 5) + 5(3x + 5) ← distribute parenthesis
= 9x² + 15x + 15x + 25 ← collect like terms
= 9x² + 30x + 25 → A