quadratic equation

noun Mathematics.
an equation containing a single variable of degree 2. Its general form is ax 2 + bx + c = 0, where x is the variable and a, b, and c are constants (a ≠ 0).

Origin:
1680–90

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Example sentences
The quadratic equation may have instilled horror in many of us.
Extend to solving any quadratic equation with real coefficients, including those with complex solutions.
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