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Quadratic Inequalities
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What quadratic inequalities mean

What quadratic inequalities mean

Upward-opening parabola crossing the x-axis at -5 and -2, with positive regions outside the roots and a negative region between them A quadratic inequality asks for all the values of xxx that make a quadratic expression positive or negative, such as x2+4x+3>0x^2+4x+3>0x2+4x+3>0. The roots are the key starting points because they are the values where the expression equals zero.

Quadratic Inequalities Lesson

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

Step-by-step lessons on Edexcel IGCSE Maths Quadratic Inequalities. Each one builds up to exam-style questions. Build confidence with the shared Foundation-tier content first, since roughly 40% of Higher-tier marks are targeted at the grades 4–5 boundary that both tiers have in common.

Lessons