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Is (x + 7) a factor of f(x) = x³ - 3x² + 2x - 8?
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12 votes
Is (x + 7) a factor of f(x) = x³ - 3x² + 2x - 8?

User Aditya Nambiar
by
5.2k points

1 Answer

13 votes

Answer:

x=-7

0=(-7)³-3(-7)²+2(-7)-8

=-343-147-14-8

0≠-512

x+7 isn't a factor

User V V
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