1.

यदि `(x-5)^(2)+(y-2)^(2)+(z-9)^(2)=0` हो तो `1(x+y-z)` का मान क्या है?A. 16B. -1C. -2D. 12

Answer» Correct Answer - C
`(x-5)^(2)+(y-2)^(2)+(z-9)^(2)=0`
It is possible only when `x-5`
`=0`
`x=5`
`y-2=0`
`y=2`
`z-9=0`
`z=9`
`:. x+y-z=5+2-9`
`=7-9=-2`


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