SOLUTION: I need help solving (2a+4)^3 please.

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: I need help solving (2a+4)^3 please.      Log On


   

Question 688830: I need help solving (2a+4)^3 please.
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
%282a%2B4%29%5E3

%282a%2B4%29%282a%2B4%29%282a%2B4%29

%282a%2B4%29%284a%5E2%2B8a%2B8a%2B16%29

%282a%2B4%29%284a%5E2%2B16a%2B16%29

2a%284a%5E2%2B16a%2B16%29%2B4%284a%5E2%2B16a%2B16%29

8a%5E3%2B32a%5E2%2B32a%2B16a%5E2%2B64a%2B64

8a%5E3%2B48a%5E2%2B96a%2B64

-------------------------------------------------------
So %282a%2B4%29%5E3 expands out to 8a%5E3%2B48a%5E2%2B96a%2B64

In other words, %282a%2B4%29%5E3=8a%5E3%2B48a%5E2%2B96a%2B64