The solution of quadratic equation is called quadratic formula.

If quadratic equation is represented as $ax^2+bx+c = 0$, then quadratic formula is written as follows. Quadratic formula is mainly used to evaluate the roots of the quadratic equation.

$x \,=\, \dfrac{-b \pm \sqrt{b^2 -4ac}}{2a}$

Quadratic formula for quadratic equation is derived in mathematics by completing the square method.

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