Find counter examples to disprove the fo...

Find counter examples to disprove the following statements:
For any integers ` x and y, sqrt(x^(2) + y^(2)) = x+y`

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The correct Answer is:

For x = 2; y = 3, the statement is not true.
(It is only true for x = 0; y = 1 or x = 0, y = 0)

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