| 单词 | quadratic equation | 
| 释义 | quadratic equation From Longman Dictionary of Contemporary EnglishMathsquadratic equationquad‧rat‧ic e‧qua‧tion /kwɒˌdrætɪk ɪˈkweɪʒən $ kwɑː-/ noun [countable]technicalHM an equation such ax²+by+c = z, which includes numbers or quantities multiplied by themselvesExamples from the Corpusquadratic equation• One boy was solving a quadratic equation, another was engaged with Euclid.Origin quadratic equation (1600-1700) quadratic from quadrate “square” ((14-21 centuries)), from Latin quadratus, past participle of quadrare “to make square”  | 
	
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