\(\frac{2^{10}.3^{10}-2^{10}.3^9}{2^9.3^{10}}=\frac{2^{10}.3^9\left(3-1\right)}{2^9.3^{10}}=\frac{2^{11}.3^9}{2^9.3^{10}}=\frac{4}{3}\)

tinh song roi rut gon 

rút gọn ta đc kết quả \(\frac{4}{3}\)

    =  2^10*(3^10-3^9)                   

        2^9*3^10

......................................... bn tự giải tiếp đi nhé, mìh bạn rồi

NHỚ CHO MÌH ĐÓ NHA

\(\frac{2^{10}.3^{10}-3^{10}.3^9}{2^9.3^{10}}=\frac{3^{10}\left(2^{10}-3^9\right)}{2^9.3^{10}}\)\(=\)\(\frac{2^{10}-3^9}{2^9}=\frac{2^9.2-3^9}{2^9}=2-3^9\)

\(\frac{2^{10}.3^{10}-3^{10}.3^9}{2^9.3^{10}}=\frac{3^{10}\left(2^{10}-3^9\right)}{2^9.3^{10}}=\frac{2^{10}-3^9}{2^9}\)

a)\(\frac{ }{ }\)

a) \(\frac{25}{1188}\)

b)\(\frac{4}{3}\)

c)\(\frac{17\times4}{-17}=\frac{4}{-1}=\frac{-4}{1}=-4\)

liệt kê các số dưới 11

Bài làm

\(\frac{2^{10}.3^{10}-2^{10}.3^9}{2^9.3^{10}}\)

\(=\frac{2^{10}\left(3^{10}-3^9\right)}{2^9.3^{10}}\)

\(=\frac{2\left[3^9\left(3-1\right)\right]}{3^{10}}\)

\(=\frac{2\left[3^9.2\right]}{3^{10}}\)

\(=\frac{4.3^9}{3^{10}}\)

\(=\frac{4}{3}\)

Vậy giá tị biểu thức là \(\frac{4}{3}\)

4/3 nha bạn 

\(\frac{2^{10}\cdot3^{10}-2^{10}\cdot3^9}{2^9\cdot3^{10}}\)\(=\frac{2^{10}\cdot3^9\left(3-1\right)}{2^9\cdot3^{10}}\)\(=\frac{2\cdot2}{3}=\frac{4}{3}\)

Vậy \(\frac{2^{10}\cdot3^{10}-2^{10}\cdot3^9}{2^9\cdot3^{10}}=\frac{3}{4}\)

\(\frac{-11^5.13^7}{11^5.13^8}=\frac{\left(-1\right).11^5.13^7}{11^5.13^7.13}=\frac{-1}{13}\)

\(\frac{2^{10}.3^{10}-2^{10}.3^9}{2^9.3^{10}}=\frac{2^{10}.\left(3^{10}-3^9\right)}{2^9.3^{10}}=\frac{2^9.2.3^9.\left(3-1\right)}{2^9.3.3^9}=\frac{2.2}{3}=\frac{4}{3}\)

a, \(\frac{-11^5.13^7}{11^5.13^8}=\frac{-1}{13}\)

b, \(\frac{2^{10}.3^{10}-2^{10}.3^9}{2^9.3^{10}}=\frac{2^{10}.3^9.\left(1-3\right)}{2^9.3^{10}}=\frac{-4}{3}\)