Question: 3. For every prime number p, either p 2 or p is odd 4. For real numbers x and y, x = y if and

3. For every prime number p, either p 2 or p
is odd 4. For real numbers x and y, x = y

3. For every prime number p, either p 2 or p is odd 4. For real numbers x and y, x = y if and only if (x+y)2 xy = 4

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