medium · GMAT Quantitative Reasoning
Functions f and g are defined as f(x) = 3x - 2 and g(x) = x^2 + 1.
What are the values of x for which f(g(x)) = 13?
- x = √(5) and x = -√(5)
- x = 2 and x = -2
- x = 4 and x = -4
- x = 3 and x = -3
- x = 2 only
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