SOLUTION: is x-2 a factor of x^5-7x^4+30x^2-5 how do we know? i think the answer is not a factor because x-2 does not divide evenly, check me please

Question 675912: is x-2 a factor of x^5-7x^4+30x^2-5 how do we know? i think the answer is not a factor because x-2 does not divide evenly, check me please
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
is x-2 a factor of x^5-7x^4+30x^2-5 how do we know?
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x-2 is a factor if f(2) = 0
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Your Problem:
f(2) = 32 - 7*16 + 30*4 - 5 = 152 - 117 is not zero,
so x-2 is not a factor.
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Cheers,
Stan H.
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