Mathematics (AS)·Equations, expressions, identities and inequalities · NSSCAS 1.1.4
Quadratic inequalities
Narrated lesson · press play
In this lesson you will learn to solve quadratic inequalities like x² − 5x + 6 > 0 with a simple three-step method: make one side zero, find the roots, and sketch the parabola. Miss Eve works through four full examples with you, one small step at a time. You will learn to write your answers in both inequality and interval notation, and to dodge the traps that cost marks in the exam. By the end, even the tricky always-positive case will feel easy.
What you'll learn in this lesson
By the end you should be able to (NSSCAS Mathematics (AS) 1.1.4):
- Solve quadratic inequalities in one unknown (e.g. x² − 5x + 6 > 0, 2x² + x − 3 ≤ 0)
Loading your lesson…
You're watching a free 3-minute preview — create a free account to keep going.
Quick revision
Revise this in 5 minutes
Miss Eve and Mike talk through the whole topic — with the figure and working drawn live.