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Quadratic equation is an equation defined by y=a x^{2} +bx+c where a,b,c are real numbers and a  \neq 0 . It can be classified as complete quadratic equation where there is quadratic term,linear term and constant(e.g  x^{2} +2x+1) and incomplete quadratic equation where there is a missing term except for the quadratic term (e.g.  x^{2} -64x, x^{2} ) This equation is also called the second degree equation.
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