Question

10xy(4xy^3-7xy+9y^2)

Answer 1

`40x^(2) y^(4) -70x^(2) y^(2) +90xy^(3)`

Explanation:

`10xy(4xy^(3) -7xy+9y^2)`

1. 10xy · 4xy^3 =
`40x^2y^4`

2. 10xy · -7xy =
`-70x^(2) y^(2)`

3. 10xy · 9y^2 =
`90xy^3`

Final step: add up all of those values together to make an equation!

Answer:
`40x^2y^4+`
`-70x^2y^2+`
`90xy^3`

Final Answer:
`40x^2y^4-70x^2y^2+90xy^3`