Numbers & Algebra

1:

If x+y+z=0,then x2/yx + y2/zx + z2/xy equal

A.

0

B.

1

C.

2

D.

3

 

Answer : D

Explanation :

x2/yx + y2/zx + z2/xy
             ...(since, x+y+z=0  'x3+y3+z3=3xyz)
(x3+y3+z3) / xyz = 3xyz / xyz = 3.

Devanshu said: (1:20am on Friday 1st July 2016)
Let x=2 y =-1 z=-1 then x y z=0 but RHS is - 3?????Btw if x y z = 0 then x^3 y^3 z^3=3xyz???? I think it should be - 3xyz then ans satisfied

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Option: A

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