Factorising
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Taking out a common factor
Factorising into a single bracket by taking out the highest common factor.
Factorising completely
Taking out the whole common factor, numbers and letters together.
Factorising a quadratic expression
Factorising x² + bx + c from a pair of numbers that add to b and multiply to c.
The difference of two squares
Factorising expressions like x² − 49, spotted by the two squares and the minus.
Factorising when x² has a coefficient
Factorising ax² + bx + c by splitting the middle term or testing brackets.