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-2)*(D(x) x+D(x) 1)-x*D(x) (x-2)-D(x) (x-2))/(x-2)^2
calculus.differentiation.deriv-of-poly
((x-2)*(D(x) x+D(x) 1)-x*D(x) (x-2)-1)/(x-2)^2