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if X= the square root of 1

the square root of 1 = 1 or -1

the square root of 1 = the square root of 1 these are true yes?

therefore 1 = -1

X-X = 2 because 1--1=2

X-X = -2 because -1-1=2

X-X = 0 because 1-1=0

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# X-x = 0

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