Let {\f}: {\R} \to {\R} be defined by {\f}( {\x})=3 {\x}^2-5 and {\g}: {\R} \to {\R} by {\g}( {\x})= { {\x}}/{ {\x}^2+1} then gof is

Correct Answer is : 3x2−59x4−30x2+26

\frac{3 x^2-5}{9 x^4-30 x^2+26}