Question

Find f o g o h

f(x)= sqrt(x-5), g(x)=x^2, h(x)=x^3+6

Answer 1

f°g°h = f(g(h)) = f(h^2) = √(h^2-5) = √((x^3+6)^2-5) = √(x^6+12x^3+31)