The step-by-step process of solving the quadratic equations by completing the square is explained along with an example. Similar to quadratic equations we have solutions for linear equations, which are used to solve linear programming problems.Ĭompleting the square means writing the quadratic expression ax 2 + bx + c into the form a (x - h) 2 + k (which is also known as vertex form), where h = -b/2a and 'k' can be obtained by substituting x = h in ax 2 + bx + c. If it is NOT factorable, then we can use one of the other methods as explained below. This method is applicable only when the quadratic expression is factorable. Thus, the solutions of the quadratic equation x 2 - 3x + 2 = 0 are 1 and 2.
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