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ڵλãҳ > 一元二次不等式的解法

һԪηһԪβʽĽⷨ_߶ѧ_ѧ_н_רʽĽⷨһԪη̡κһԪβʽ һԪη̡κ...
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һԪβʽĽⷨ һ,ѧϰĿ ѧϰĿ 1.һԪβʽĽⷨ,һԪβʽĽ. 2.һԪβʽ,һԪη̺...
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ѧص㡿 ʵ龳гһԪβʽģ;һԪβʽĽⷨһԪβʽǸѧ IJʽ֮һ,ǽѧҪ,...
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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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+bx+c ͼ.ѧ˵ ʽ ax2+bx+c<0 Ľͷ ax2+bx+c=0 Ľ,ͬʱעһԪη̡һԪ βʽͶκʲôϵ...
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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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һԪβʽĽⷨ_һѧ_ѧ_н_ר˽A ڶ һԪβʽĽ̲ⷨı5 ڶ ʽ ...
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