Question

Simplify.Use the distributive property to remove parentheses;then combine like terms. A) -3b(5a-3b)+4(-3ab-5b^2)

Answer 1

When the parentheses are removed the result is as follows:
-15ab + 9b^2 -12ab -20b^2
If you understand the above, can you now combine the like terms?

Answer 2

Note the use of the Distributive Property of Multiplication over addition.
@jenny508