Question

If A=x+1, B=x^+2x-1, C=2x what is AB+C in simplest form

Answer 1

(x + 1)(x^2 + 2x - 1) + 2x

x^3 + 2x^2 -x + x^2 + 2x -1 + 2x

x^3 + 3x^2 + 3x -1