Exercise algebra.equations.quadratic.no-abc

Description
solve a quadratic equation without abc-formula

Derivation

x^2 == 5*x

⇒ algebra.equations.quadratic.move-left

x^2-5*x == 0

⇒ algebra.equations.quadratic.common-factor

x*(x-5) == 0

⇒ algebra.equations.quadratic.product-zero

x == 0 or x == 5