Exercise algebra.manipulation.rational.simplify
Description
simplify a rational expression (with a variable in a divisor)
Derivation
![](http://ideas.cs.uu.nl/images/external.png)
((x+5)*(x+5)+(x+3)*(-x-3))/((x+3)*(x+5))
⇒ algebra.equations.linear.distr-times(x^2+10*x+25-x^2-6*x-9)/((x+3)*(x+5))
⇒ algebra.equations.linear.merge(4*x+16)/((x+3)*(x+5))