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ڵλãҳ > 一元二次不等式解法

һԪη̽ⷨѡ_ѧ_н_רһԪη̽ⷨѡһ ǰԤϰѧһԪη̵ĽⷨЩ? ȫƽʽ: ƽʽ: ...
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һԪηۺϰ_ѧ_ѧ_н_ר |0Ķ|0|ٱĵ һԪηۺϰ_ѧ_ѧ_н_...
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ȫЧ ѧϰ ڿʱ: ѧ꼶ѧ()ѧ ༶ 鳤 ʤ λؽ 2.2 һԪη ...
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Wƽ̲ 3-4 һԪηʽĹʽһԪηʽ ax 2 +bx+c=0,a0 b 2 -4ac b b 2 4ac >= 0 Ĺʽ:x= 2a C>...
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һԪηרѵ_ѧ_н_רѧһԪηרѵ 1ʽֽⷨ ʽֽ ķ 2ƽ һ ...
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صѵ a. ѧص͵һԪβʽͼ b. ѧѵǶβʽη̺Ͷκ߹ϵлϵνϺͷ ת...
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17.2(5)һԪη ѧĿ 1ֱӿƽ䷽ʽʽⷨһԪη.һԪ ηĽṹص,ѡʵĽⷨ...
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