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2019中考数学一轮复习第一部分教材同步复习第二章方程（组）与不等式（组）第8讲一元二次方程权威预测.doc

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1第一部分 第二章 第 8 讲1已知关于 x 的一元二次方程 kx22 x10 有实数根，若 k 为非负整数，则 k 等于_1_.2为响应国家“精准扶贫”号召，某银行 2018 年安排精准扶贫贷款 100 亿元，已知该银行 2016 年安排精准扶贫贷款 64 亿元，设 2016 年至 2018 年该银行安排精准扶贫贷款的平均增长率为 x，根据题意可列方程为( B )A100(1 x)264 B64(1 x)2100C64(12 x)100 D64(1 x2)100

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