What is the standard form of (x+5) (x+5)

x² + 10x + 25

Step-by-step explanation:

Given

(x + 5) (x + 5)

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

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

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

= x² + 10x + 25 ← in standard form