If a quadratic equation can be factorised ... It is not possible to find the square root of a negative number, so the equation has no solutions. The graph of \(y = x^2 + 2x + 5\) does not cross ...

An alternative method to solve a quadratic equation is to ... can then be solved by taking the square root of both sides. Start by following the formula: \(x^2 + bx + c = \left(x + \frac{b}{ ...