Question 84775

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!!!