Exercise algebra.manipulation.rational.simplify
Description
simplify a rational expression (with a variable in a divisor)
Derivation
Final term is not finished
(a^2-2*a-15)/(a*(a^2-3*a-10))
⇒ algebra.equations.linear.distr-times(a^2-2*a-15)/(a^3-3*a^2-10*a)