Algebraic equation of particular importance in optimization.
A more descriptive name is second-degree polynomial equation. Its standard form is &math.a;&math.x;2 + &math.b;&math.x; + &math.c; = 0, and its solution is given by the quadratic formula which guarantees two real-number solutions, one real-number solution, or two complex-number solutions, depending on whether the discriminate, &math.b;2 − 4&math.a;&math.c;, is greater than, equal to, or less than 0.
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