AP ICET 11 Sep 2020 Shift 2 Paper

Question : 77 of 200

Marks: +1, -0

Arithmetical Ability

If x, y, z are real numbers and not all zero and x + y + z = 0, then

{x^2+y^2+z^2}/ {(x-y)^2+(y-z)^2+ (z-x)^2}=

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