\(81^{11}.3^{17}=3^{61};27^{10}.9^{15}=3^{60}\Rightarrow bt=3\)
\(\frac{81^{11}.3^{17}}{27^{10}.9^{15}}=\frac{3^{44}.3^{17}}{3^{30}.3^{30}}=\frac{3^{61}}{3^{60}}=3\)
Rút gọn
\(\frac{81^{11}\cdot3^{17}}{27^{10}\cdot9^{15}}\)
rút gọn biểu thức :
\(A=\frac{81^{11}\cdot3^{17}}{27^{10}\cdot9^{15}}\)
nhanh nha mấy bn mai mik phải nộp rồi
Tính:
a/\(\frac{3^{17}\cdot81^{11}}{27^{10}\cdot9^{15}}\)
b/\(\frac{9^2\cdot2^{11}}{16^2\cdot6^3}\)
c/\(\frac{2^{10}\cdot3^{31}+2^{40}\cdot3^6}{2^{11}\cdot3^{31}+2^{41}\cdot3^6}\)
rút gọn biểu thức
a) \(\frac{20^5\cdot5^{10}}{\left(4\cdot25\right)^5}\)b)\(\frac{6^3+3\cdot6^2+3^3}{-13}\)c)\(\frac{125^{12}}{5^{13}\cdot25^{11}}\)d)\(\left(2^{-1}+3^{-1}\right):\left(2^{-1}-3^{-1}\right)+\left(2^{-1}\cdot2^0\right)\cdot2^3\)
e)\(\frac{81^{11}\cdot3^{17}}{27^{10}\cdot9^{15}}\)
\(\frac{3^{17}.81^{11}}{27^{10}.9^{15}}+\frac{9^2.2^{11}}{16^2.6^3}\)
tính
\(\frac{3^{17}.81^{11}}{27^{10}.9^{15}}\)
Rút gọn:
\(\frac{3^{17}.81^{11}}{27^{10}.9^{15}}\)
Tính \(A=\left(\frac{1}{4\cdot9}+\frac{1}{9\cdot14}+\frac{1}{14\cdot19}+...+\frac{1}{44\cdot49}\right)\cdot\frac{1-3-5-7-...-49}{89}\)
\(B=\frac{5\cdot4^{15}\cdot9^9-4\cdot3^{20}\cdot8^9}{5\cdot2^{10}\cdot6^{19}-7\cdot2^{29}\cdot27^6}-\frac{2^{19}\cdot27^3+15\cdot4^9\cdot9^4}{6^9\cdot2^{10}+12^{10}}\)
tính
\(\frac{2^{15}.9^4}{6^3.8^3}\)
\(\frac{81^{11}.3^{17}}{27^{10}.9^{15}}\)
