SOLUTION: I need to completely factor the following polynomial 8x^3+56x^2+8x+56 I came up (x+4)(x^2+8)

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Question 768968: I need to completely factor the following polynomial
8x^3+56x^2+8x+56
I came up
(x+4)(x^2+8)
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


One good way to determine if you did a problem correctly is to start with your answer and work backwards.

Using FOIL on , you really only have to test the firsts and the lasts. and . Thank you for playing; Johnny has some lovely parting gifts on your way out...

Start again.



All terms have a common factor of 8, so



Regroup:



Collect the two binomials that share common factors:



Factor from the first binomial, and from the second:



Now factor out



John

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