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where ''x'' is the variable, and ''a'', ''b'', and ''c'' represent the [[coefficient]]s. Such polynomials often arise in a [[quadratic equation]] <math>ax^2 + bx + c = 0.</math> The solutions to this equation are called the [[Root of a function|roots]] and can be expressed in terms of the coefficients as the [[quadratic formula]]. Each quadratic polynomial has an associated quadratic function, whose [[graph of a function|graph]] is a [[parabola]].
====Bivariate
Any quadratic polynomial with two variables may be written as
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