18.1 Quadratic equations
ADiscriminant18.1.3
Revision18.1.1
abcformula18.1.5
quaresplitting18.1.2
Sketching18.1.4
Mixed18.1.6
Context18.1.7
18.2 Quadratic inequalities
Graphical18.2.1
BAlgebraic18.2.2
BSpecial cases18.2.3
BContext18.2.4
18.3 Quadratic formulae with a parameter
BIntersectionswith the x-axis18.3.1
BCurve throughthe vertices18.3.2