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(C) The quadratic formula for the equation $ax^2 + bx + c = 0$ is $x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}$.Let us check option $(C)$: $\frac{2c}{-b \m

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$\frac{2c}{-b \mp \sqrt{b^2 - 4ac}}$

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(C) The quadratic formula for the equation $ax^2 + bx + c = 0$ is $x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}$.Let us check option $(C)$: $\frac{2c}{-b \mp \sqrt{b^2 - 4ac}}$.Rationalizing the denominator:$\frac{2c}{-b - \sqrt{b^2 - 4ac}} 	imes \frac{-b + \sqrt{b^2 - 4ac}}{-b + \sqrt{b^2 - 4ac}} = \frac{2c(-b + \sqrt{b^2 - 4ac})}{b^2 - (b^2 - 4ac)} = \frac{2c(-b + \sqrt{b^2 - 4ac})}{4ac} = \frac{-b + \sqrt{b^2 - 4ac}}{2a}$.Similarly,$\frac{2c}{-b + \sqrt{b^2 - 4ac}} = \frac{-b - \sqrt{b^2 - 4ac}}{2a}$.Thus,the expression in option $(C)$ is equivalent to the standard quadratic formula.

If $ax^2 + bx + c = 0$,then $x =$

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