Question 749824
(a + 6)(a^2 - 8a + 8)
First using the a in the first
bracket, multiply into the second
bracket:
a^3 - 8a^2 + 8a
Then using the +6 in the first
bracket, multiply into the second bracket:
6a^2 - 48a + 48
Now collect like terms

a^3 - 8a^2 + 8a + 6a^2 - 48a + 48

a^3 - 2a^2 - 40a + 48
:-)