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\(\frac{10^4.81-16.15^2}{4^4.675}\)
= \(\frac{2^4.5^4.3^4-2^4.3^2.5^2}{4^4.3^3.5^2}\)
= \(\frac{2^4.5^2.3^4-2^4.3^2.5^2}{2^8.3^3.5^2}\)= \(\frac{2^4.5^2.3^2\left(3^2-1\right)}{2^8.3^3.5^2}\)= \(\frac{8}{2^4.3}=\frac{1}{6}\)
mấy bài khó còn làm dc ko lẽ ko làm dc bài này hay quân kiến thức cũ vậy bn
a, 8
b, 43046721( hình như đề sai phải bạn )
c, 43046721
d, ......
\(A=\frac{2^{19}.27^3+15.4^9.9^4}{6^9.2^{10}+12^{10}}\)
\(A=\frac{2^{19}.\left(3^3\right)^3+3.5.\left(2^2\right)^9.\left(3^2\right)^4}{\left(2.3\right)^9.2^{10}+\left(2^2.3\right)^{10}}\)
\(A=\frac{2^{19}.3^9+3.5.2^{18}.3^8}{2^9.3^9.2^{10}+2^{20}.3^{10}}\)
\(A=\frac{2^{19}.3^9+5.2^{18}.3^9}{2^{19}.3^9+2^{20}.3^{10}}\)
\(A=\frac{2^{18}.3^9.\left(2+5\right)}{2^{18}.3^9.\left(2+2^2.3\right)}\)
\(A=1.\frac{2+5}{2+4.3}\)
\(A=\frac{7}{14}=\frac{1}{2}\)
Vậy \(A=\frac{1}{2}\)
a ) \(\frac{3^2.5^2+15.7}{22.6+18.11}\)
= \(\frac{15.15+15.7}{33.4+6.33}\)
= \(\frac{15.\left(15+7\right)}{33.\left(4+6\right)}\)
= \(\frac{15.22}{33.10}\)
= \(\frac{3.5.11.2}{11.3.5.2}\)
= 1
a,\(\frac{3^2.5^2+15.7}{22.6+18.11}=\frac{9.15+15.7}{11.12+18.11}=\frac{\left(9+7\right).15}{11\left(12+18\right)}\)\(=\frac{16.15}{11.30}=\frac{8}{11}\)
b,\(\frac{6.9-2.17}{63.3-119}=\frac{2.27-2.17}{7.27-7.17}=\frac{2.\left(27-17\right)}{7.\left(27-17\right)}\)\(=\frac{2}{7}\)
c,\(\frac{3^{10}.11+3^{10}.5}{3^9.2^4}=\frac{3^{10}.\left(11+5\right)}{3^9.16}=\frac{3.16}{16}=3\)
$\frac{5^2.6^{11}.16^2+6^2.12^6.15^2}{2.6^{12}.10^4-81^2960^3}$52.611.162+62.126.1522.612.104−8129603= \(y=\frac{1}{x^2+\sqrt{x}}\)
\(y=\frac{1}{x^2+\sqrt{x}}\)
\(A=\frac{10^4.81-16.15^2}{4^4.675}=\frac{\left(2.5\right)^4.3^4-2^4.\left(3.5\right)^2}{\left(2^2\right)^4.3^3.5^2}=\frac{2^4.5^4.3^4-2^4.3^2.5^2}{2^8.3^35^2}=\frac{2^4.5^4.3}{2^4.3}=5^4=625\)