Question

Which expression is equivalent to?

Answer 1

`m^3+m^2`

Explanation:

First, distribute
`-m^2` to the terms inside the parentheses and then, combine like terms. We get:

`2m^2-m^2(7-m)+6m^2\\=2m^2-7m^2+m^3+6m^2\\=m^3+m^2`

Thus, fourth answer choice is right.