Exercise algebra.manipulation.rational.simplify
Description
simplify a rational expression (with a variable in a divisor)
Derivation
(-p^2+5*p)/(p^2-10*p+25)
⇒ algebra.equations.quadratic.nice-factors(-p^2+5*p)/(p-5)^2
⇒ algebra.equations.quadratic.common-factor-p*(p-5)/(p-5)^2
⇒ algebra.equations.rational.cancel-div, clipboard=[condition == (p /= 5)]-p/(p-5)