In algebra, letters are used when numbers are not known. Algebraic terms, such as \(2s\) or \(8y\), leave the multiplication signs out. So rather than \(2 \times s\), write \(2s\), and rather than \(8 ...

To remove brackets is to multiply the term outside the brackets by each term inside. Factorising an expression is to write it as a product of its factors. Check your understanding of the process with ...