Find the roots of the following quadratic (if they exist) by the method of completing the square.
We have to make the quadratic equation a perfect square if possible or sum of perfect square with a constant.
(a + b)2 = a2 + 2ab + b2
⇒ (x + 11/6)2 = 1/36
⇒ x + 11/6 = �1/6
⇒ x = -2, -5/3
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