The algebraic shortcut that simplifies complex expressions into simple products

GCSE Maths - What is Difference of Two Squares (DOTS) (2026/27 exams) · 6:17 · Video: Cognito · Watch at the source

In short: Mastering the Difference of Two Squares (DOTS) is a fundamental skill for factorising. This video breaks down the step-by-step process, providing worked examples to help you move from complex equations to simplified brackets with confidence.

The DOTS method is a specific technique used in algebra to factorise expressions where one squared term is subtracted from another. The video guides viewers through the systematic application of this rule, moving from identification to final factorisation.

To ensure mastery, the content includes worked examples and demonstrates how to verify your results by expanding the factored brackets back into their original form. This approach supports students across both GCSE Foundation and Higher tiers.

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