Exercise algebra.equations.quadratic.no-abc

Description
solve a quadratic equation without abc-formula

Derivation

3*x^2-11 == (3+2*x)^2

⇒ algebra.equations.quadratic.distr-square

3*x^2-11 == 9+12*x+4*x^2

⇒ algebra.equations.quadratic.move-left

-x^2-12*x-20 == 0

⇒ algebra.equations.quadratic.nice-factors

(x+2)*(x+10) == 0

⇒ algebra.equations.quadratic.product-zero

x == -2 or x == -10