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5 March, 00:15

If (x + 8) is a factor of f (x), which of the following must be true?

A) x = - 8 and x = 8 are roots of f (x).

B) Neither x = - 8 nor x = 8 is a root of f (x).

C) f (-8) = 0

D) f (8) = 0

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Answers (1)
  1. 5 March, 00:25
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    The answer to the question letter "C. f (-8) = 0". The factor x + 8 gives the value of x = - 8. This means that neither A nor B is the answer to the question. Substituting also - 8 to the value of x can give an answer of f (x) or f (-8) equal to zero.
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