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)
(2*p^2+8*p)/((p+4)*(p-4))
⇒ algebra.equations.quadratic.common-factor2*p*(p+4)/((p+4)*(p-4))
⇒ algebra.equations.rational.cancel-div, clipboard=[condition == (p /= -4)]2*p/(p-4)