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Completing the Square
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Building a perfect square

Building a perfect square

Completing the square rewrites a quadratic into a form where the square is obvious. The aim is to write it as (x+a)2+b(x + a)^2 + b(x+a)2+b, which makes the structure much easier to read.

Completing the Square Lesson

  1. IGCSE
  2. /Maths
  3. /Completing the Square

Step-by-step lessons on Edexcel IGCSE Maths Completing the Square. 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