Exercise calculus.differentiation.quotient

Description
Use the quotient-rule to find the derivative of a polynomial. Only remove parentheses in the numerator.

Derivation

Final term is not finished

((x+1)*(1-D(x) 2)-(x-2)*D(x) (x+1))/(x+1)^2

⇒ calculus.differentiation.deriv-of-poly

(x+1-(x-2)*D(x) (x+1))/(x+1)^2