Câu hỏi 2Rút gọn $$\frac{9^{8/3}-9^{5/3}}{4^{8/3}-4^{2/3}}.$$$\frac{3^{7/3}5}{2^{5/3}}$$3^{7/3}2^{5/3}$$\frac{3^{5/3}2^{5/3}}5$$\frac{3^{7/3}2^{5/3}}5$$\frac{3^{4/3}2^{1/3}}5$