medium · GMAT Quant
Let f(x) = 2x^2 - 1 and g(x) = x + 1.
Find all values of x for which f(g(x)) = g(f(x)).
- No real solutions
- x = -(1)/(4)
- x = -1 ± frac√(2)2
- x = 1 ± √(2)
- x = frac1 ± √(2)2
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