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Foundationshard
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Evaluate (x+y+z)2−(x2+y2+z2)(x + y + z)^2 - (x^2 + y^2 + z^2)(x+y+z)2−(x2+y2+z2) when x=2,y=3,z=5x = 2, y = 3, z = 5x=2,y=3,z=5.