Exercise algebra.manipulation.rational.simplify
Description
simplify a rational expression (with a variable in a divisor)
Derivation
Final term is not finished
(x^2+5*x+6)/(x*(x^2-3*x+2*x-6))
⇒ algebra.equations.linear.distr-times(x^2+5*x+6)/(x^3-3*x^2+2*x^2-6*x)
⇒ algebra.equations.linear.merge(x^2+5*x+6)/(x^3-x^2-6*x)