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

Asked by maham237 @ in Mathematics viewed by 761 People

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).

Answered by maham237 @


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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