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Foundationshard
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If x2+y2+z2=14x^2 + y^2 + z^2 = 14x2+y2+z2=14 and xy+yz+xz=11xy + yz + xz = 11xy+yz+xz=11, find (x+y+z)2(x + y + z)^2(x+y+z)2.