Exercise algebra.manipulation.rational.simplify

Description
simplify a rational expression (with a variable in a divisor)

Derivation

(x^2+7*x+12)/(x^2+5*x+6)

⇒ algebra.equations.quadratic.nice-factors

(x^2+7*x+12)/((x+2)*(x+3))

⇒ algebra.equations.quadratic.nice-factors

(x+3)*(x+4)/((x+2)*(x+3))

⇒ algebra.equations.rational.cancel-div, clipboard=[condition == (x /= -3)]

(x+4)/(x+2)