Equations often contain algebra. Algebra is used in Maths when we do not know the exact number in a calculation - this unknown value can be replaced with a letter. We solve an equation by working ...

\(3x^2 = 48\) is an example of a quadratic equation that can be solved simply. If \((x + 1)(x + 2) = 0\), then \(x + 1 = 0\) or \(x + 2 = 0\), meaning \(x = -1\) or ...