Question

Find the value of

${b}^{3} - 2 {b}^{3} + 7 {b}^{3} - 9 {b}^{2}$
Explain Briefly​

Answer 1

Answer:

-3b³ is the right answer.

Step-by-step explanation:

b³-2b³+7b³-9b³

=b³+7b³-2b³-9b³

=8b³-11b³

=-3b³