Answer
3$a^{3}$ + 2$a^{2}$ - 8a - 5
Work Step by Step
(3a + 5)($a^{2}$ - a - 1) =
Use the distributive property.
3a($a^{2}$) +3a(-a) +3a(-1) +5($a^{2}$) +5(-a) +5(-1) =
3$a^{3}$ -3$a^{2}$ -3a + 5$a^{2}$ -5a -5 =
Simplify.
3$a^{3}$ + 2$a^{2}$ - 8a - 5
