 quadratic formula

Math.the formula for determining the roots of a quadratic equation from its coefficients: x = (b ± sqrt(b^{2}  4ac))/2a.
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Universalium. 2010.
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quadratic formula — noun : a formula used to solve a quadratic equation in a single variable * * * Math. the formula for determining the roots of a quadratic equation from its coefficients: x = ( b ± sqrt(b2 4ac))/2a … Useful english dictionary
quadratic formula — noun The formula in the form for finding roots of the quadratic equation … Wiktionary
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Formula for primes — In mathematics, a formula for primes is a formula generating the prime numbers, exactly and without exception. No easily computable such formula is known. A great deal is known about what, more precisely, such a formula can and cannot be.Prime… … Wikipedia