SOLUTION: I just have one problem that I can't seem to do. I need to know how to factor the problem below: 8a^2 + 48 + 72 I just need to be shown how to factor this one out. I really

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: I just have one problem that I can't seem to do. I need to know how to factor the problem below: 8a^2 + 48 + 72 I just need to be shown how to factor this one out. I really      Log On


   

Question 245171: I just have one problem that I can't seem to do. I need to know how to factor the problem below:
8a^2 + 48 + 72
I just need to be shown how to factor this one out. I really appreciate you showing me. Thank you.
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


I presume that you made a typo and really meant:



First factor out an 8:



Then all you need to know is that 3 + 3 = 6 and 3 X 3 = 9

On the other hand if you really meant:



like you wrote, then taking out the 8 leaves you with:



And, if you are factoring over the reals, you are done.

But if you are factoring over the complex numbers




John