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Jyutping ji6 ci3 fong1 cing4
Pinyin èr cì fāng chéng

Definitions (CC-CEDICT)
  1. quadratic equation
Definitions (Wiktionary)
  1. noun
    quadratic equation
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)