已知有理数X,Y,Z满足根号下(X-Z-2)+|3x-6y-7|+(y+3z-10/3)^2,求X的3N次方Y的3N+1次方-X的值

已知有理数X,Y,Z满足根号下(X-Z-2)+|3x-6y-7|+(y+3z-10/3)^2=0,求X的3N次方Y的3N+1次方-X的值
∵X,Y,Z满足根号下(X-Z-2)+|3x-6y-7|+(y+3z-10/3)^2=0,
∴x-z-2=0
3x-6y-7=0
y+3z-10/3=0
联立方程组解得：
x=19/6
y=-1/6
z=7/6

题目是错的,请核对题目：X的3N次方Y的3N+1次方-X