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简化 X2 + -1x + -2 = 0 重新排序条件: -2 + X2 + -1x = 0 解: -2 + X2 + -1x = 0 求解变量 'X'. 移动所有含x 的放右边,所有其它条件放左边. 增加 '2' 到方程的每一侧. -2 + X2 + 2 + -1x = 0 + 2 重新排序条件: -2 + 2 + X2 + -1x = 0 + 2 结合相似条件: -2 + 2 = 0 0 + X2 + -1x = 0 + 2 X2 + -1x = 0 + 2 结合相似条件: 0 + 2 = 2 X2 + -1x = 2 增加 'x' 到方程的每一侧. X2 + -1x + x = 2 + x 结合相似条件: -1x + x = 0 X2 + 0 = 2 + x X2 = 2 + x 简化 X2 = 2 + x 重新排序条件: -2 + X2 + -1x = 2 + x + -2 + -1x 重新排序条件: -2 + X2 + -1x = 2 + -2 + x + -1x 结合相似条件: 2 + -2 = 0 -2 + X2 + -1x = 0 + x + -1x -2 + X2 + -1x = x + -1x 结合相似条件: x + -1x = 0 -2 + X2 + -1x = 0 无法确定此方程的解.
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