If a student writes a dimensional formula for torque is [M^xL^1/yT^-2]. Find the value of x,y,z

Dear Student ,
Dimension of torque is = ML^2​T^-2 
Now , the student has written it as ,M^x L^1/yT^-z .
So the value of x = 1
1/y = 2
or , y = 1/2 ,
-z = -2 
or , z =2 .
Regards