158.94=158.(32)4=158.38=(15.3)8=458
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\(\left(\frac{3}{7}\cdot\frac{4}{15}+\frac{1}{3}\cdot9^{15}\right)^0\cdot\frac{1}{3}\cdot\frac{6^8}{12^4}\)
a) \(\frac{0,8^5}{0,4^6}\) b)\(\frac{8^{10}+4^{10}}{8^4+4^{11}}\) c)\(\frac{2^{15}\cdot9^4}{6^3\cdot8^3}\)
\(\frac{7}{3\cdot4}-\frac{9}{4\cdot5}+\frac{11}{5\cdot6}-\frac{13}{6\cdot7}+\frac{15}{7\cdot8}-\frac{17}{8\cdot9}+\frac{19}{9\cdot10}\)
Tính \(A=\left(\frac{1}{4\cdot9}+\frac{1}{9\cdot14}+\frac{1}{14\cdot19}+...+\frac{1}{44\cdot49}\right)\cdot\frac{1-3-5-7-...-49}{89}\)
\(B=\frac{5\cdot4^{15}\cdot9^9-4\cdot3^{20}\cdot8^9}{5\cdot2^{10}\cdot6^{19}-7\cdot2^{29}\cdot27^6}-\frac{2^{19}\cdot27^3+15\cdot4^9\cdot9^4}{6^9\cdot2^{10}+12^{10}}\)
\(\frac{2^{15}\cdot9^4}{6^6\cdot8^3}\)
\(\dfrac{4^6\cdot9^5+6^9\cdot120}{8^4:3^{12}-6^{11}}\)
\(\dfrac{\text{10^9*81^{10}}}{8^4\cdot25^5\cdot9^{10}}\)
help!!!!
Tính:
\(\frac{790^{^4}}{79^{^4}}\)
\(\frac{8^{^{14}}}{4^{^{12}}}\)
\(\frac{2^{^{15}}\cdot9^{^4}}{6^{^6}\cdot8^{^3}}\)
\(\frac{45^{^{10}}\cdot5^{^{10}}}{75^{^{10}}}\)
Rút gọn A=\(\frac{4^5\cdot9^4-2\cdot6^9}{2^{10}\cdot3^8+6^8\cdot20}\)