Root number (7/ 12)=( 1/2) Root number (7/3)= Root number (2 1)/6.
√0. 1×√ 1.2= root number (0. 12)=0.2√3.
Root sign [27/(3x? )] = root sign (9/x? ) =(3/x) radical sign (1/x)=(3/x? )√x