Quadratics

Quadratics is a branch of algebra dealing with Quadratic expression, equations and graphs. From GCSE you should be able to confidently:

• sketch a graph from a quadratic equation

• expand and factorise quadratic expressions

• complete the square given a quadratic expression

• solve quadratic equations by factorising, completing the square, quadratic formula, graphically or by iteration

• solve a quadratic inequality

Quadratic Graphs

1) Drawing

Expanding & Factorising

1) Basic

2) Harder

Completing the Square

1) Basic

2) Harder

Solving Quadratics

Factorising

Formula

Complete the Square

Graphically

Solving Quadratic Inequalities

Examples