\(\frac{8^{10}+4^{10}}{8^4+4^{11}}=\frac{\left(2^3\right)^{10}+\left(2^2\right)^{10}}{\left(2^3\right)^4+\left(2^2\right)^{11}}=\frac{2^{30}+2^{20}}{2^{12}+2^{22}}=\frac{2^{20}\left(2^{10}+1\right)}{2^{12}\left(1+2^{10}\right)}=\frac{2^{20}}{2^{12}}=2^8\)

Đặt A

\(A=\frac{2^{30}+2^{20}}{2^{12}+2^{22}}=\frac{2^{12}.\left(2^{18}+2^8\right)}{2^{12}.\left(1+2^{10}\right)}=2^8\)

\(A=\frac{4^6.9^5+69.120}{8^4.3^{12}+6^{11}}=\frac{2^{12}.3^{10}+2^3.3^2.115}{2^{12}.3^{12}+\left(2.3\right)^{11}}=\frac{3^2.2^3\left(115+2^9.3^8\right)}{6^{11}\left(6+1\right)}=\frac{115+2^9.3^8}{6^8.3.7}\)

\(B=\frac{10^4+5.10^3+5^4}{25}=\frac{\left(10^2\right)^2+2.5^2.10^2+\left(5^2\right)^2}{25}=\frac{\left(10^2+5^2\right)^2}{25}=\frac{125^2}{25}=\frac{25.625}{25}=625\)

\(C=\frac{8^{10}+4^{10}}{8^4+4^{11}}=\frac{4^{10}.2^{10}+4^{10}}{4^4.4^7+4^4.2^4}=\frac{4^{10}\left(2^{10}+1\right)}{4^4.2^4\left(2^{10}+1\right)}=\frac{4^6}{2^4}=256\)

2/5,2/3,3/7,1/3,12/25

dễ lắm bạn

\(\frac{4^7}{4^{10}}\)=\(\frac{1}{4^3}\) vì 4^7 : 4^7=1;4^10:4^7=4^3

\(\frac{5^{11}}{5^8}\)=\(5^3\)vì 5^11:5^8=5^3;5^8:5^8=1

chỉ tke thui.mấy cái gạch kia bỏ đi vì mk chưa sử dụng phần mềm rành lắm

4⁷/4¹⁰ = 1/64

5¹¹/5⁸ = 125

Ủng hộ nhaaa

\(\frac{4^7}{4^{10}}=\frac{1}{4^3}\)

\(\frac{5^{11}}{5^8}=\frac{5^3}{1}=5^3\)

\(\frac{8^{10}+4^{10}}{8^4+4^{10}}\)

\(=\frac{\left(2^3\right)^{10}+\left(2^2\right)^{10}}{\left(2^3\right)^4+\left(2^2\right)^{10}}\)

\(=\frac{2^{30}+2^{20}}{2^{12}+2^{20}}\)

\(=\frac{2^{20}.\left(2^{10}+1\right)}{2^{12}.\left(1+2^8\right)}\)

\(=\frac{2^8.\left(2^{10}+1\right)}{1+2^8}\)

\(=\frac{262400}{257}\)

\(\frac{8^{10}+4^{10}}{8^4+4^{10}}=\frac{2^{30}+2^{20}}{2^{12}+2^{20}}=\frac{2^{12}.\left(2^{18}+2^{10}\right)}{2^{12}.\left(1+2^{10}\right)}\frac{2^{18}+2^{10}}{2^{10}+1}\)

\(\frac{8^{10}+4^{10}}{8^4+4^{10}}=\frac{2^{30}+2^{20}}{2^{12}+2^{20}}\)

                     \(=\frac{2^{20}\left(2^{10}+1\right)}{2^{12}\left(1+2^8\right)}\)

                     \(=\frac{2^8\left(2^{10}+1\right)}{1+2^8}\)

                    \(=\frac{262400}{257}\)

Tham khảo :

^{(Tại mik lười ko mún ghi nên bạn tham khảo cái ảnh này nhá)}

Tham khảo :

Mình vừa học xong 

Đây sở trường của tui

4 /6=2/3

12/8 = 3/2

15/25 =3/5

11/22=1/2

36/10 =18/5

75/36=25/12

NHỚ TÍCH NHA BẠN VÌ CHÚNG TA ĐỀU LÀ PHỤ NỮ

Lệ quyên : v~ cả sở trường làm như chỉ mình mày biết làm ý

Nguyễn thị lệ quyên chắc cậu nhẩm nhanh

2/3 3/2 3/5 1/2 18/5 25/12

\(\frac{4^{10}+8^4}{4^5+8^8}=\frac{4^5.4^5+8^4}{4^5+8^4.8^4}=\frac{4^5}{8^4}=\frac{\left(2^2\right)^5}{\left(2^3\right)^4}=\frac{2^{10}}{2^{12}}=\frac{2^{10}}{2^{10}.2^2}=\frac{1}{4}\)