А) √25/36-√16/81=... б) √160/√10+√60/√15=...
√ 25/36 - √ 16/81 = 5/6 - 4/9 = 15/18 - 8/18 = 7/18 √ 160/√ 10 + √60/√15 = √ 16 + √ 4 = 4 + 2 = 6
√4 1/2*√2/25-√8*72/21*84=...
А) √25/36 - √16/81 = 5/6 - 4/9 = 7/18 ; Б) √160/√10 + √60/√15 = √16 + √4 = 4 + 2 = 6