SOLUTION: 7x^3+63x^2+7x+63 completely factor

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Question 627002: 7x^3+63x^2+7x+63 completely factor
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
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7x^3+63x^2+7x+63 completely factor
:
we can group factor here
7x^2(x+9) + 7(x+9)
;
factor out (x+9)
(x+9)(7x^2+7)
:
factor out 7
7(x^2 + 1)(x + 9)