Question

Find f × g × h if f(x)=√x-1, g(x)=x^2 +2, and h(x)=x+3.

Answer 1

`f(x)\cdot g(x)\cdot h(x)=√(x-1)\cdot(x^2+2)(x+3)=\\ =(x^3+3x^2+3x^3+9)√(x-1)=(4x^3+3x^2+9)√(x-1)`