Some quadratics cannot be factorised. An alternative method to solve a quadratic equation is to complete the square. To solve an equation of the form \(x^2 + bx + c = 0\) consider the expression ...

Sometimes we have to form quadratic equations to help us solve problems. Dave has a box which has one side of length (\({x}\) – 3) and another side of length (\({x}\) + 2). Find an expression fo ...