Question

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HULVE
If (x - 5) is a fac javascript, which of the following must be true?
O A root of f(x) is x = -5.
O A root of f(x) is x = 5.
O Both x = -5 and x = 5 are roots of f(x).
O Neither x = -5 nor x = 5 is a root of f(x).
LLL​

Answer 1

a root of f(x) is x=5

Explanation:

If (x -5) is a factor of f(x), then ...

a root of f(x) is x = 5

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A root is a value of x that makes f(x) = 0. If x-5 is a factor, then x=5 will make that factor zero. Anything multiplied by that factor will result in zero. Hence x=5 will be a root of f(x).