SOLUTION: How do I do this: Given f(x)=3x^2-2, find the values of x which gives f(x)=73?

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Question 84775: How do I do this: Given f(x)=3x^2-2, find the values of x which gives f(x)=73?
Answer by dolly(163) About Me  (Show Source):
You can put this solution on YOUR website!

given f(x) = 3x^2 - 2
Also f(x) = 73
==> 3x^2 - 2 = 73
==> 3x^2 = 73 + 2
==> 3x^2 = 75
==> x^2 = 75/3
==> x^2 = 25
==> x = =5, -5
Good Luck!!!