SOLUTION: If f(x)=the square root of (x^2-9), then f(4) is?

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Question 947282: If f(x)=the square root of (x^2-9), then f(4) is?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
If f(x)=the square root of (x^2-9), then f(4) is?
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f(x) = sqrt(x^2-9)
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Ans: f(4) = sqrt(16-9) = sqrt(7)
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Cheers,
Stan H.
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