SOLUTION: if x+7is a factor of f(x), then what is the value of f(-7)

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Question 118517: if x+7is a factor of f(x), then what is the value of f(-7)
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
If (x+7) is a factor of f(x), then
f%28x%29=g%28x%29%2A%28x%2B7%29
where g(x) is another function of x.
f%28-7%29=g%28-7%29%2A%28-7%2B7%29
f%28-7%29=g%28-7%29%2A0
f%28-7%29=0