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What a quadratic inequality means

What a quadratic inequality means

Upward-opening parabola crossing the x-axis at x = -3 and x = 2, with positive regions outside the roots and a negative region between them labelled

A quadratic inequality asks when a quadratic expression is greater than, less than, or equal to zero. To solve one, first find the boundary values by solving the related quadratic equation where the expression equals zero.

Quadratic Inequalities Lesson

  1. GCSE
  2. /Maths
  3. /Quadratic Inequalities

Step-by-step lessons covering Edexcel GCSE Maths Quadratic Inequalities for Foundation and Higher tier. Each lesson works through exam-style questions in Paper 1, Paper 2 and Paper 3 format. Build fluency with number, ratio and algebra first, since geometry, probability and statistics topics rely on them, and leave extra time nearer the exam for Higher-tier problem-solving and multi-step reasoning questions.

Lessons

Quadratic Simultaneous EquationsTransforming Graphs y=f(x)ProofCompleting the SquareThe Nth Term of a Quadratic SequenceQuadratic InequalitiesProof of the Circle TheoremsPerpendicular Lines and the equation of a tangentVectors Proof QuestionsProbability Equation Questions