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quadratic formula — news, coverage & facts — IJR

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quadratic formula — Jamie Twells · Public domain

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quadratic formula

formula that provides the solution(s) to a quadratic equation

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Also known as quadratic equation formula, quadratic solution formula

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Overview

In elementary algebra, the quadratic formula is a formula that provides the two solutions, or roots, to a quadratic equation. There are other ways of solving a quadratic equation instead of using the quadratic formula, such as completing the square. Given a general quadratic equation of the form with representing an unknown, with , and representing constants, and with , the quadratic formula is: where the plus–minus symbol "±" indicates that the quadratic equation has two solutions. Written separately, they become:

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