Exercise algebra.equations.quadratic.no-abc

Description
solve a quadratic equation without abc-formula

Derivation

5*x == x^2

⇒ 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