Given the set a = {x, XY, X-Y}, B = {0, | x | y}, and a = B, find the value of X, y | Math enthusiast | Mathematical art

Given the set a = {x, XY, X-Y}, B = {0, | x | y}, and a = B, find the value of X, y

In a, (1) if x = 0, then xy = 0, it does not conform to the mutual anisotropy of elements. (2) if xy = 0, then x = 0, or y = 0, x = 0 (1) has been stated, it is not desirable; if y = 0, then X-Y = x, it does not conform to the mutual anisotropy of elements. Therefore, only X-Y = 0 is suitable, and x = y is obtained, so a = {x, x ^ 2,0} B = {0, | x | x} from B, we can see that except 0, the other two elements must

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