Exercise algebra.equations.quadratic.no-abc
Description
solve a quadratic equation without abc-formula
Derivation
2*x == x^2
⇒ algebra.equations.quadratic.move-left-x^2+2*x == 0
⇒ algebra.equations.quadratic.common-factor-x*(x-2) == 0
⇒ algebra.equations.quadratic.product-zerox == 0 or x == 2