Answer
(y - 5)(x + 3)
Work Step by Step
1. Factor out the GCF for the first two monomials:
xy + 3y = y(x + 3)
Factor out the GCF for the last two monomials:
-5x - 15 = -5(x + 3)
The expression is now y(x + 3) - 5(x + 3)
2. Use the distributive property to simplify.
(y - 5)(x + 3)