Quadratic Inequalities (Leaving Cert Mathematics): Flashcards

An inequality where the highest power of the variable is 2

Bring all terms to one side

Factorise the quadratic equation

Determine which interval satisfies the inequality

Three values

One within range of roots, two outside range

Insert each into original inequality to check if satisfied

Test intervals with dummy values to see which satisfies inequality

$x=2$ and $x=3$

$2<x<3$