Ответ:\(9^{2/5}\cdot27^{2/5}=(9\cdot27)^{2/5}=243^{2/5}=9\);\(7^{2/3}\cdot49^{2/3}=343^{2/3}=49\);\(144^{3/4}:9^{3/4}=16^{3/4}=8\);\(150^{3/2}:6^{3/2}=25^{3/2}=125\).