Answer:
1. 15xy + 9y
2. 4xy + 6y
3. 4xy + 8y
4. 21xy + 6y
Step-by-step explanation:
You just have to expand it:
3y(5x+3)
= 3y(5x) + 3y(3)
= 15xy + 9y
2y(2x+3)
= 2y(2x) + 2y(3)
= 4xy + 6y
4y(x+2)
= 4y(x) + 4y(2)
= 4xy + 8y
3y(7x+2)
= 3y(7x) + 3y(2)
= 21xy + 6y
