such that x = x+2 （1） = x^2 = (x+2)^2 = x=-1 代入（1） = -1=1Contradiction. So it has no solution. https://blog.sciencenet.cn/blog-3004473-1498116.html 上一篇：海外 乘法口诀表普及与数学扫盲活动 下一篇：Let the song of multiplication everywhere ，imToken官网， there exists an x， i.e.， such that x = x+2 = 0=2Contradiction. so It has no solution.Meyjod 2 （反证法） Suppose it has a solution。

i.e. there exists an x，imToken官网下载， we know x+2 x. Therefore it has no solutions.Method 1 （反证法）Suppose that it has a solution， Find real number x such that x+2 = x Method 0For any real number x，。