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3 March, 18:37

If (x - 5) is a factor of f (x), which of the following must be true?

A root of f (x) is x = - 5.

A root of f (x) is x = 5.

Both x = - 5 and x = 5 are roots of f (x).

Neither x = - 5 nor x = 5 is a root of f (x).

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Answers (1)
  1. 3 March, 21:00
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    A root of f (x) is x = 5, since you have to equate the factor (x-5) to 0, which gives you 5 for x.
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