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What is a quadratic?

What is a quadratic?

Graph of the parabola y = x^2 - x - 6 crossing the x-axis at -2 and 3, with roots and vertex labelled A quadratic equation has highest power 2 and is usually written as ax2+bx+c=0ax^2+bx+c=0ax2+bx+c=0, where a≠0a \neq 0a=0. In this lesson, we focus on forms like x2+bx+c=0x^2+bx+c=0x2+bx+c=0, where the coefficient of x2x^2x2 is 1 and factorising is usually the best method.

Solving Quadratics Lesson

  1. IGCSE
  2. /Maths
  3. /Solving Quadratics

Step-by-step lessons covering CIE IGCSE Maths Solving Quadratics 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