(5/6)a^(1/3)*b(-2)*[-3a^(-1/2)b^(-1)]除以[4a^(2/3)*b(-3)]^1/2×根号ab

问题描述:

(5/6)a^(1/3)*b(-2)*[-3a^(-1/2)b^(-1)]除以[4a^(2/3)*b(-3)]^1/2×根号ab

-9/5a的1/2乘以b的3/2书上给的答案是-(5/4b)