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Asked by
lomas
Help with factoring this one:
x^9+1
(x^3+1) (x^3-x^3+1)
Is this correct?
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Answered by
Reiny
you can factor the x^3 + 1 again into
(x+1)(x^2 - x + 1), your other factor was wrong, should have been x^6 - x^3 + 1
so
x^9 + 1 = (x+1)(x^2 - x + 1)(x^6 - x^3 + 1)
Answered by
lomas
THANKS!
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