Question

Brenda is finding the product of –3r and. Is she correct? If not, what changes should be made?

Answer 1

D

Explanation

To remove the brackets, she should do this in two steps.

- 3r( - 2r^2) = 6r^3

- 3r(3r) = - 9r^2

Combine

6r^3 - 9r^2

D