Answer
5$a^{3}$ + 7$a^{2}$ - 13a - 6
Work Step by Step
(5a + 2)($a^{2}$ + a - 3) =
Use the distributive property.
5a($a^{2}$) +5a(a) +5a(-3) +2($a^{2}$) +2(a) +2(-3) =
5$a^{3}$ + 5$a^{2}$ - 15a + 2$a^{2}$ + 2a - 6 =
Simplify.
5$a^{3}$ + 7$a^{2}$ - 13a - 6