Exercise algebra.equations.quadratic.no-abc
Description
solve a quadratic equation without abc-formula
Derivation
![](http://ideas.cs.uu.nl/images/external.png)
x == (6+sqrt 12)/2 or x == (6-sqrt 12)/2
⇒ algebra.equations.quadratic.simpler-sqrtx == 3+sqrt 3 or x == 3-sqrt 3
Description
solve a quadratic equation without abc-formula