(y+3)(y+8)

Expanding the expression (y+3)(y+8) using the distributive property:

(y+3)(y+8) = y(y+8) + 3(y+8)
= y^2 + 8y + 3y + 24
= y^2 + 11y + 24

So, (y+3)(y+8) simplifies to y^2 + 11y + 24.