# quadratic formula

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**quadratic formula**— Math. the formula for determining the roots of a quadratic equation from its coefficients: x = ( b ± sqrt(b2 4ac))/2a. * * * … Universalium**quadratic formula**— noun The formula in the form for finding roots of the quadratic equation … Wiktionary**Quadratic equation**— This article is about quadratic equations and solutions. For more general information about quadratic functions, see Quadratic function. For more information about quadratic polynomials, see Quadratic polynomial. In mathematics, a quadratic… … Wikipedia**Quadratic function**— A quadratic function, in mathematics, is a polynomial function of the form f(x)=ax^2+bx+c ,!, where a e 0 ,!. The graph of a quadratic function is a parabola whose major axis is parallel to the y axis.The expression ax^2+bx+c in the definition of … Wikipedia**quadratic equation**— Math. an equation containing a single variable of degree 2. Its general form is ax2 + bx + c = 0, where x is the variable and a, b, and c are constants (a non zero). [1680 90] * * * Algebraic equation of particular importance in optimization. A… … Universalium**Quadratic residue**— In number theory, an integer q is called a quadratic residue modulo n if it is congruent to a perfect square modulo n; i.e., if there exists an integer x such that: Otherwise, q is called a quadratic nonresidue modulo n. Originally an abstract… … Wikipedia**Quadratic reciprocity**— The law of quadratic reciprocity is a theorem from modular arithmetic, a branch of number theory, which shows a remarkable relationship between the solvability of certain quadratic equations modulo different prime moduli.Although it allows us to… … Wikipedia**Quadratic form**— In mathematics, a quadratic form is a homogeneous polynomial of degree two in a number of variables. For example, is a quadratic form in the variables x and y. Quadratic forms occupy a central place in various branches of mathematics, including… … Wikipedia**Quadratic Gauss sum**— For the general type of Gauss sums see Gaussian period, Gauss sumIn mathematics, quadratic Gauss sums are certain sums over exponential functions with quadratic argument. They are named after Carl Friedrich Gauss, who studied them… … Wikipedia**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