If f(x) is a polynomial in x(>0) satisfying the equation
f(x)+f1x=f(x).f1x. and f(2)=−7,then f(3)=_______
-36
-46
-26
-16
f(x)f(1x)=f(x)+f1x ⇒fx=1±xn givenf2=-7⇒1±2n=-7⇒n=3 fx=1-x3