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ڵλãҳ > 一元二次不等式的解法

+bx+c ͼ.ѧ˵ ʽ ax2+bx+c<0 Ľͷ ax2+bx+c=0 Ľ,ͬʱעһԪη̡һԪ βʽͶκʲôϵ...
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һԪβʽĽⷨϼ_ѧ_Ȼѧ_רҵϡ2015 ѧѧҵ 1 һһԪβʽĽⷨ һԪβʽĽⷨ...
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һԪβʽ_ѧ_ѧ_н_רһԪβʽ(֪ʶ)αҪ:ʵ龳гһԪβʽģ...
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һԪβʽĽⷨ(̰)һָϰ һ ѧĿ ֪ʶĿ꡿ (1) ѧһԪβʽԴʵ,˽һԪβ ʽйظ...
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2 2 2 2 2 2 2 2 صѵ صѵСصһԪβʽĽⷨ,ѵһԪη̡һԪβʽκ ϵһԪ...
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ѧ ˽ A ѧ 5 һԪβʽ (һʱ) λ:еڶ߼ѧ : ʱ:2014 4 3.2 һԪβ...
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ѵ: ѵ:κ һԪηһԪβʽ⼯Ĺϵ, һԪβʽ ͼ ֪ʶҪ ֪ʶһ: ֪ʶһ:һԪβ...
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һԪβʽĽⷨ_һѧ_ѧ_н_ר֪ʶ+ϰ֪ʶһ: ֪ʶһ:һԪβʽĶֻһδ֪,δ֪ߴ...
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һԪβʽĽⷨ_һѧ_ѧ_н_ר˽A ڶ һԪβʽĽ̲ⷨı5 ڶ ʽ ...
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д̺ ˼·:ڸСһԪβʽһ, ֽͨ취: áۡ˼; áνϡ˼롣 ...
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