An alternative method to solve a quadratic equation is to complete the square. To solve an equation ... in the form of \(ax^2 + bx + c = 0\): use \(\left(x + \frac{b}{2}\right)^2 - \left(\frac ...

An alternative method to solve a quadratic ... To correct this (completing the square) we need to subtract 19, giving \((x + 3)^2 – 19 = 0\). Rearrange this quadratic to get \((x + 3)^2 ...