Answer:
4x² + 20x + 25
Step-by-step explanation:
given
(2x + 5)²
= (2x + 5)(2x + 5)
Each term in the second factor is multiplied by each term in the fiest factor , that is
2x(2x + 5)+ 5(2x + 5) ← distribute parenthesis
= 4x² + 10x + 10x + 25 ← collect like terms
= 4x² + 20x + 25
