MCQOPTIONS
If $$ {(x-5)^{2} +{(y-2)^{2}}+{(z-9)^{2}=0}}$$ ..
If $$ {(x-5)^{2} +{(y-2)^{2}}+{(z-9)^{2}=0}}$$ then what is the value of (x+y-z)?