Question

If g(x)=x^2+x-2 and 1/2g(f(x))=2x^2-5x+2 then f(x) is

Answer 1

$doubt \: is \: here \\ \frac{1}{2g(f(x)) } = 2 {x}^{2} - 5x + 2 \\ \: \: \: \: \: \: \: \: \: \: \: \: or \\ \frac{1}{2} \times g(f(x)) = 2 {x }^{2} - 5x+ 2$