Question: Say that x 2 = y 2 mod n , but x y mod n and x y mod n . 1 . Show that

Say that x2= y2 mod n, but x y mod n and x y mod n.
1. Show that 1= gcd(x + y, n) cannot hold
2. Explain how to factor n based on the above item (or Show how to find a divisor of n)

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