Algebra

Simple substitution

Algebraic substitution is like solving a puzzle — you replace letters

HCF of algebraic expressions

Finding the Highest Common Factor (HCF) of algebraic expressions is

Equations of horizontal and vertical lines

Horizontal and vertical lines are all around us—think of

Solving harder quadratics by factorising

When solving harder quadratic equations you're tackling problems

Solving quadratic equations by factorising

Solving quadratic equations by factorising is like finding the hidden

Factorising harder quadratic expressions

Factorising harder quadratic expressions is a vital skill in algebra.

Factorising quadratic expressions

Factorising quadratic expressions is a key skill in algebra that

Gradient between two points

The gradient between two points tells us how steep a

Finding the gradient

The gradient of a straight line tells us how steep

Finding the endpoint when given a midpoint

Finding the endpoint of a line segment when the midpoint