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OpenStudy (anonymous):
If F(x)=x^2+4x, find the value(s) of x if the f(x) is 5.
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OpenStudy (anonymous):
Put the x value inside the F(x) equation. F(5) = 5^2 + 4 * 5 F(5) = 25 + 20 F(5) = 45.
OpenStudy (anonymous):
ohh, the answer is 1,-5 though..
OpenStudy (anonymous):
how am I supposed to get it?
OpenStudy (anonymous):
but the answer is 1,-5 though..
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