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(x - y)^2 + (y + z)^2 = (x + y)^2 + (y- z)^2 2021 Malaysia IMONST 1 Senior P10

Source:

September 21, 2021
Diophantine equationdiophantinenumber theory

Problem Statement

Determine the number of integer solutions (x,y,z)(x, y, z), with 0x,y,z1000 \le x, y, z \le 100, for the equation (xy)2+(y+z)2=(x+y)2+(yz)2.(x - y)^2 + (y + z)^2 = (x + y)^2 + (y - z)^2.