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OpenStudy (anonymous):
if f(x)=x^2-3 and f(a)= 46, what is the value of a? Explain.
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OpenStudy (aum):
\[ f(x)=x^2-3 \\ f(a) = a^2 - 3 = 46 \\ a^2 = 49 \\ a = \pm7 \]
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