Answer:
D
Step-by-step explanation:
Given
(x + y + 2)(y + 1)
Each term in the second factor is multiplied by each term in the first factor, that is
x(y + 1) + y(y + 1) + 2(y + 1) ← distribute parenthesis
= xy + x + y² + y + 2y + 2 ← collect like terms
= y² + xy + x + 3y + 2 → D
