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: x = \frac {-b \pm \sqrt{b^2 - 4ac{2a} is a formula for finding the roots of the quadratic equation ax2 + bx + c = 0.

: H2O is the formula for water (Dihydrogen monoxide)

: ux|en|The companys winning formula includes excellent service and quality products.

: The formula of the rocket fuel has not been revealed.

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