SOLUTION: Find the following product (a - 9)(a^2 + 9a + 8) a)a^3 + 89a +72 b)a^3 + 18a^2 + 73a + 72 c)a^3 + 73a + 72 d)18a^2 + 73a - 72

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Find the following product (a - 9)(a^2 + 9a + 8) a)a^3 + 89a +72 b)a^3 + 18a^2 + 73a + 72 c)a^3 + 73a + 72 d)18a^2 + 73a - 72      Log On


   

Question 93056: Find the following product
(a - 9)(a^2 + 9a + 8)
a)a^3 + 89a +72 b)a^3 + 18a^2 + 73a + 72 c)a^3 + 73a + 72 d)18a^2 + 73a - 72
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
(a - 9)(a^2 + 9a + 8)
=a(a^2+9a+8)-9(a^2+9a+8)
= a^3 + 9a^2 + 8a -9a^2 - 81a -72
= a^3 -73a -72
=========================
Cheers,
Stan H.