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If x = -3 is a zero of f(x), which of the following must be true?

a) A factor of f(x) is (x – 3)
b) A factor of f(x) is (x + 3)
c) x = 3 is also a zero
d) f(x) has no real solutions

If x = -3 is a zero of f(x), which of the following must be true? a) A factor of f-example-1
User Oleg Levin
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1 Answer

6 votes

Answer: B

Step-by-step explanation: You make the values in the parentheses equal to zero.

(X + 3) = 0

X = -3

A is wrong because the root would be 3, not negative 3. C is wrong because 3 isn’t guaranteed to be a root. D is wrong because -3 is a real solution.

User Goodzilla
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