यदि x +y + z = 0 है, तो (x^(2) + y^(2) +...

यदि `x +y + z = 0` है, तो `(x^(2) + y^(2) + z^(2) ) + (z^(2) - xy )` का मान है:

A

3

B

`2`

C

`-2`

D

`-1`

लिखित उत्तर

Verified by Experts

The correct Answer is:

B

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