解分式方程：1-xx-2+2=12-x．-数学

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• 解方程：xx+3+6x2-9=1x-3．-数学
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• 阅读理解题：一次数学兴趣小组的活动课上，师生有下面一段对话，请你阅读完后再解答下面问题：老师：同学们，今天我们来探索如下方程的解法：（x2-x）2-8（x2-x）+12=0．学生甲：老师，-数学
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