题目

解方程： ．   答案： 解：两边同乘以得              ····························4分经检验：是原方程的根。∴原方程的解为：  ····························6分 解析:略 如图，将一副三角尺按如图所示方式摆放，则图中∠α与∠β的关系是 ．