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3 years ago

If f(x)=x^2 - 3 and f(a)=46, what is the value of a? explain

1 answer:

8 0

You are trying to find what x to put into f(x) to get out 46. To do this, solve the following equation.
$x^{2} -3 = 46$
$x^2 = 49$
$x^2 = \sqrt{49}$
Therefore x = 7 or x = -7

-7, 7

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