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

Answer:
D
Step-by-step 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