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## Definition of *quadratic equation*

**:**any equation containing one term in which the unknown is squared and no term in which it is raised to a higher power solve for x in the quadratic equation x

^{2}+ 4x + 4 = 0

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Merriam-Webster unabridgedWords at Play

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quadratic equationTime Traveler for

quadratic equation## The first known use of

quadratic equationwas in 1647See more words from the same year