Is this correct now after i revised it

Multiply. 3xy^2(5xy-4x+6y)

3xy^2(5xy)=15x^2y^3
3xy^2(-4x)=-12x^2y^2
3xy^2(6y)=18xy^3

so i get from this

15x^2y^3-12x^2y^2+18xy^3

correct

awsome i just thought that the 15x^2y^3-12x^2y^2 should be combine...

Multiply: (3xy + 2y) by 5xy

Yes, you need to combine the like terms in the expression 15x^2y^3 -12x^2y^2 + 18xy^3. Like terms are terms that have the same variables with the same powers.

In this case, the like terms are the terms that involve the variables x and y.

The terms 15x^2y^3 and -12x^2y^2 both have x^2 and y as variables, so you can combine them by adding or subtracting their coefficients.

Similarly, the term 18xy^3 does not have any other like terms, so it remains as it is.

Combining the like terms, you get:

(15x^2y^3 - 12x^2y^2) + 18xy^3

This can be simplified to:

3x^2y^2 + 18xy^3

So the final answer is:

3x^2y^2 + 18xy^3