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Next exams: Wednesday 2nd May, Thursday 3rd May, Wednesday 9th May, Thursday 17th May, Friday 18th May
Factorising quadratic expressions is the opposite of multiplying out the brackets. For example the expression (x+1)(x+3) can be multiplied out to give x^2+4x+3. Going the other way or reversing this process is called factorising.

## Summary/Background

The ability to factorise quadratic functions is essential to making sound progress in advanced mathematics. It is a skill. You get better with practise.