Revision guides

GCSE Maths Algebra

Step-by-step GCSE algebra guides: solving equations, factorising, quadratics and simultaneous equations, with worked examples for every method.

Algebra 11 min read

How to Solve Simultaneous Equations Step by Step (GCSE Guide)

Learn how to solve simultaneous equations step by step for GCSE Maths: elimination, substitution and the Higher-tier linear-quadratic method, with worked examples.

Updated 15 August 2026Read guide

Algebra 12 min read

Expanding and Factorising Brackets — GCSE Algebra Guide

Learn how to expand single and double brackets, factorise quadratics, spot the difference of two squares and avoid the sign errors that cost GCSE marks.

Updated 15 August 2026Read guide

Algebra 13 min read

How to Solve Quadratic Equations: Factorising, Formula and Completing the Square

Learn the three ways to solve quadratic equations at GCSE — factorising, the quadratic formula and completing the square — with verified worked examples.

Updated 15 August 2026Read guide

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