Exercise algebra.inequalities.quadratic
Description
solve a quadratic inequation
Derivation
![](http://ideas.cs.uu.nl/images/external.png)
3*x^2+3*x-18 == 0
⇒ algebra.equations.quadratic.simpler-polyx^2+x-6 == 0
⇒ algebra.equations.quadratic.nice-factors(x-2)*(x+3) == 0
⇒ algebra.equations.quadratic.product-zerox == 2 or x == -3