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Equations and Inequalities


– Solving quadratic equations

– Completing the square

– Solving simultaneous equations

– Solving quadratic simultaneous equations

– Solving linear and quadratic inequalities

Example Key Words


A symbol that stands for an unknown quantity


A mathematics statement that uses an equals sign to show that two expressions are equal.


A relationship between two expressions that are not equal, often written with the symbols >, >, <, and < 


An expression or equation that includes an x²

Simultaneous Equations

A set of two or more equations that contain two or more unknown quantities

Completing the Square

A way of simplifying or solving a quadratic equation by adding an expression to both sides to make one part of the equation a perfect square.