SOLUTION: Witch polynomial has (x+4) as a factor

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Question 623909: Witch polynomial has (x+4) as a factor
Answer by ewatrrr(24785) About Me  (Show Source):
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Hi

polynomial f(x) with (x+4) as a factor ⇒ f(-4) = 0

The factor theorem states that a polynomial f(x) has a factor (x − k) if and only if f(k) = 0.