M (3/2)-n (2/3) = (m (1/2)-n (1/2)) (m+(Mn) (1/2)+n), and then it can be transformed.
The second question = √ a-1√ a √ a1√ a-1.
The third question =1-7.5 √ 4-116+3 4 (1/4) =1-7.5 ×