Answer:
4x² + 12x + 9
Explanation:
given
(2x + 3)²
= (2x + 3)(2x + 3)
each term in the second factor is multiplied by each term in the first factor , that is
2x(2x + 3) + 3(2x + 3) ← distribute parenthesis
= 4x² + 6x + 6x + 9 ← collect like terms
= 4x² + 12x + 9