(—3a的2/3次方b的1/2次方)(6a的1/2次方b的1/3次方)除以9a的1/6b5/6+(更号b)的4次方
=-3a^(2/3)b^(1/2)*(6a^(1/2)*b^(1/3))/(9a^(1/6)*b^(5/6)+b^2
=-18a^(7/6)b^(5/6)/(9a^(1/6)*b^(5/6))+b^2
=-2a+b^2
(—3a的2/3次方b的1/2次方)(6a的1/2次方b的1/3次方)除以9a的1/6b5/6+(更号b)的4次方
=-3a^(2/3)b^(1/2)*(6a^(1/2)*b^(1/3))/(9a^(1/6)*b^(5/6)+b^2
=-18a^(7/6)b^(5/6)/(9a^(1/6)*b^(5/6))+b^2
=-2a+b^2