\(\frac{9^{14}\cdot225^5\cdot8^7}{18^{12}\cdot625^3\cdot24^3}\)
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Câu 1 : \(1,321338308x10^{-4}\)
Câu 2 : \(1316,572106\)
Câu 3 : \(1,641302619x10^{-13}\)
Ủng hộ nhé,tớ đang âm.
\(B=\frac{2.4+2.4.8+4.8.16+8.16.32}{3.4+2.6.8+4.12.16+8.24.32}\)
\(B=\frac{2.4+2.4.8+4.2.4.16+2.4.16.32}{3.4+2.2.3.2.4+4.3.4.16+2.4.8.3.32}\)
\(B=\frac{2.4.\left(1+8+4.16+16.32\right)}{3.4.\left(1+2.2.2+4.16+2.8.32\right)}\)
\(B=\frac{2.4.\left(1+8+4.16+16.32\right)}{3.4.\left(1+8+4.16+16.32\right)}\)
\(B=\frac{2}{3}\)
Chúc bn học tốt !!!!
\(\left(\frac{1}{4.9}+\frac{1}{9.14}+\frac{1}{14.19}+\frac{1}{19.24}+...+\frac{1}{44.49}\right)\frac{1-3-7-...-49}{89}\)
\(=\frac{1}{5}\left(\frac{1}{4}-\frac{1}{9}+\frac{1}{9}-\frac{1}{14}+...+\frac{1}{44}-\frac{1}{49}\right)\frac{1+\left(-3\right)+\left(-7\right)+...+\left(-49\right)}{89}\)
\(=\frac{1}{5}\left(\frac{1}{4}-\frac{1}{49}\right)\frac{1-\left(3+7+...+49\right)}{89}\)
\(=\frac{1}{5}.\frac{45}{196}.\frac{1-\left(\left(49+3\right).24:2\right)}{89}\)
\(=\frac{9}{196}.\frac{-623}{89}\)
\(=\frac{9}{196}.\left(-7\right)\)
\(=\frac{-9}{28}\)
CHÚC BN HỌC TỐT!!!!
c )
\(1+\frac{1}{1+\frac{1}{1+\frac{1}{1+\frac{1}{2}}}}=1+\frac{1}{1+\frac{1}{1+\frac{1}{\frac{3}{2}}}}=1+\frac{1}{1+\frac{1}{1+\frac{5}{3}}}=1+\frac{1}{1+\frac{1}{\frac{8}{3}}}=1+\frac{1}{\frac{11}{8}}=\frac{19}{11}\)
bài này không khó. Nhưng đánh máy để giải cho bạn thì thực sự khó
đề =\(\frac{\left(3^2\right)^{14}.\left(15^2\right)^5.\left(2^3\right)^7}{\left(2.9\right)^{12}.\left(5^3\right)^3.\left(8.3\right)^3}=\frac{3^{28}.15^{10}.2^{21}}{2^{12}.9^{12}.5^9.\left(2^3\right)^3.3^3}\)
\(=\frac{3^{28}.3^{10}.5^{10}.2^{21}}{2^{21}.3^{27}.5^9}=\frac{3^{38}.5^{10}.2^{21}}{2^{21}.3^{27}.5^9}=3^9.5\)
cái này bạn bấm mt là ra nha
k cho mình nha bạn
Đề: \(\frac{9^{14}\cdot225^5\cdot8^7}{18^{12}\cdot625^3\cdot24^3}\)
\(\Rightarrow\frac{\left(3^2\right)^{14}\cdot\left(5.3\right)^5\cdot\left(2^3\right)^7}{\left(3^2\cdot2\right)^{12}\cdot\left(5^4\right)^3\cdot\left(2^3\cdot3\right)^3}\)
\(\Rightarrow\frac{3^{28}\cdot5^5\cdot3^5\cdot2^{21}}{3^{24}\cdot2^{12}\cdot5^{12}\cdot2^9\cdot3^3}\)
\(\Rightarrow\frac{3^{33}\cdot5^5\cdot2^{21}}{3^{27}\cdot2^{21}\cdot5^{12}}\)
\(\Rightarrow\frac{3^{26}}{5^7}\)