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Quadratic equations and cubic equations are examples of polynomials.

A polynomial in x is of the form:


Solving $p(x)=0$ will give n roots, some (or all) of which might be complex (see complex number), although some may be repeated roots. For example, $x^2-2x+1=0$ has two roots, but both are equal to 1.

See also Roots of Polynomials

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