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Recognising a quadratic

Recognising a quadratic

Parabola on coordinate axes crossing the x-axis at two roots

A quadratic equation has highest power 2, such as x2x^2x2. Before using the formula, write it in standard form ax2+bx+c=0ax^2+bx+c=0ax2+bx+c=0 with a≠0a \ne 0a=0.

Quadratic Formula Lesson

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

Step-by-step lessons covering CIE IGCSE Maths Quadratic Formula for Core and Extended tier. Each lesson works through exam-style questions in Paper 1 and Paper 3 (Core) or Paper 2 and Paper 4 (Extended) format. Start with the Core-tier fundamentals in number and algebra before moving on to the more demanding Extended-only topics like calculus-adjacent algebra and advanced trigonometry.

Lessons

SurdsBoundsDirect and Inverse ProportionQuadratic FormulaFactorising Harder QuadraticsAlgebraic FractionsRearranging Harder FormulaeFinding the Area of Any TriangleThe Sine RuleThe Cosine Rule3d Pythagoras and TrigonometryThe Magnitude of a VectorHistogramsConditional Probability