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精品文档,仅供学习与交流,如有侵权请联系网站删除【精品文档】第 1 页知识点:二元一次方程组的概念及解法...
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1一轮传染后1+x二轮传染后1+x+x(1+x)(1+x)2病毒传染问题三轮传染后(1+x)3n轮传染后(1+x)n2一轮传染后2+2x二...
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25一元二次方程的应用2(用一元二次方程解几何问题).ppt
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回顾练习:① x2+2x+1=0② 3t(t+2)=2(t+2)③ (1-2t)2-t2=2④ (x+1)2-4(x+1)+4=0一元二次方程应用题分类18....
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