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Quadratic Equation
A quadratic equation is a polynomial equation of degree two. Its general form is , where , , and are real numbers and . If , the squared term disappears and the equation is no longer quadratic. Examples of quadratic equations include , , , and (which simplifies to a degree two expression ).
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Intermediate Algebra @ OpenStax
Ch.6 Factoring - Intermediate Algebra @ OpenStax
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Quadratic Equation