Find the roots of the quadratic equation x2 4x 5 0 by the method of completing the square. To find the roots of a quadratic equation in the form ax 2 bx c 0 follow these steps. If the leading coefficient a is not equals to 1 then divide each term of the equation by a such that co-efficient of x 2 is 1.
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X2 10x 25 4 25. So we solved the equation by completing the square method. And to find your solutions simply perform x 3 5 AND x 3 - 5 to get your answer as follows. 2 x2 5 x 1 0.