2x + 3x = 5x\) is an identity because \(2x + 3x\) will always equal \(5x\) regardless of the value of \(x\). Identities can be written with the sign ≡, so the example could be written as \(2x ...

Samsung may be working on upgrading the Galaxy S25 Ultra ‘s already complex, high performance camera system for the Galaxy ...

Factorising an expression means finding the factors that multiply together to give that expression. For \(\mathbf{x^2 + 5x + 6}\), the first step is to find two numbers whose sum is 5 and whose ...