Question

if f:RR is defined as f(x)=x⅔-3x+2 find fof(x)

Answer 1

fof(x) = {x^(2/3) - 3x + 2}^(2/3) - 3{x^(2/3) - 3x + 2} + 2

Binomially expand the first term and then calculate.