Question

determine a funçao composta f(g(x)    f(u)=(u-1)³+2u²     g(x)=x+1

Answer 1

  f(u)=(u-1)³+2u²     g(x)=x+1

f(g(x) = f(x+1)==>(x+1-1)³+2(x+1)²

x³+2(x² + 2x + 1 )
x³+ 2x² + 4x + 2