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16 tháng 5 2019

25

23 tháng 10 2016

\(\frac{45^3\cdot20^4\cdot18^2}{180^5}\)

\(=\frac{45^3\cdot4^4\cdot5^5\cdot18^2}{45^5\cdot4^5}\)

\(=\frac{5^5\cdot18^2}{45^2\cdot4}\)

\(=\frac{5^5\cdot2^2\cdot9^2}{5^2\cdot9^2\cdot2^2}\)

\(=\frac{5^5}{5^2}\)

\(=5^3=125\)

18 tháng 2 2020

a)\(G=\frac{21^2.14.125}{35^5.6}=\frac{\left(3.7\right)^2.2.7.5^3}{\left(5.7\right)^5.2.3}=\frac{3^2.7^3.2.5^3}{5^5.7^5.2.3}=\frac{3}{5^2.7^2}=\frac{3}{35^2}=\frac{3}{1225}\)

b)\(H=\frac{45^3.20^4.18^2}{180^5}=\frac{\left(5.3^2\right)^3.\left(2^2.5\right)^4.\left(2.3^2\right)^2}{\left(5.3^2.2^2\right)^5}=\frac{5^3.3^6.2^8.5^4.2^2.3^4}{5^5.3^{10}.2^{10}}=\frac{5^7.2^{10}.3^{10}}{5^5.3^{10}.2^{10}}=5^2=25\)

\(A,\frac{4^9.36+64}{16^4.100}=\frac{\left(2^2\right)^9.2^2.3^2+2^6}{\left(2^4\right)^4.2^2.5^2}=\frac{2^{20}.3^2+2^6}{2^{18}.5^2}=\frac{2^6\left(2^{14}.3^2+1\right)}{2^{18}.5^2}=\frac{2^{14}.3^2+1}{2^{12}.5^2}=\frac{147457}{102400}\)

B,

\(\frac{11.3^{22}.3-9^{13}}{\left(2.3^{14}\right)^2}=\frac{11.3^{22}-\left(3^2\right)^{13}}{2^2.3^{28}}=\frac{11.3^{22}-3^{26}}{2^2.3^{28}}=\frac{3^{22}\left(11.1-3^4\right)}{2^2.3^{28}}=\frac{11-81}{2^2.3^6}=-\frac{70}{2916}=-\frac{35}{1456}\)

c, 

\(\frac{45^3.20^4.18}{180^5}=\frac{\left(3^2.5\right)^3.\left(5.2^2\right)^4.2.3^2}{\left(2^2.3^2.5\right)^5}=\frac{3^6.5^3.5^4.2^8.2.3^2}{2^{10}.3^{10}.5^5}=\frac{3^8.2^{10}.5^7}{2^{10}.3^{10}.5^5}=\frac{5^2}{3^2}=\frac{25}{9}\)

23 tháng 7 2019

\(\frac{4^9\cdot36+64}{16^4\cdot100}=\frac{2^6\cdot147457}{2^{16}\cdot100}=\frac{147457}{2^{10}\cdot100}\)

\(\frac{11\cdot3^{22}\cdot3-9^{13}}{2^2\cdot3^{28}}=\frac{3^{23}\left(11-3^3\right)}{2^2\cdot3^{28}}=\frac{-16\cdot3^{23}}{2^2\cdot3^{28}}=\frac{-4}{243}\)

\(\frac{45^3\cdot20^4\cdot18}{180^5}=\frac{3^8\cdot2^9\cdot5^7}{2^{10}\cdot3^{10}\cdot5^5}=\frac{25}{18}\)

21 tháng 6 2017

e, \(E=\dfrac{4^6.3^4.9^5}{6^{12}}=\dfrac{\left(2^2\right)^6.3^4.\left(3^2\right)^5}{2^{12}.3^{12}}\)

\(=\dfrac{3^4.3^{10}}{3^{12}}=3^2=9\)

f, \(F=\dfrac{2^{13}+2^5}{2^{10}+2^2}=\dfrac{2^5.\left(2^8+1\right)}{2^2.\left(2^8+1\right)}=2^3=8\)

g, \(G=\dfrac{21^2.141.125}{35^{5.6}}=\dfrac{3^2.7^2.47.3.5^3}{5^{30}.7^{30}}\)

\(=\dfrac{3^3.47}{5^{27}.7^{28}}\)(bạn xem lại đề nha)

Các câu còn lại làm tương tự! Chúc bạn học tốt!!!

21 tháng 6 2017

g , bn chép sai đề òi kìa'

10 tháng 11 2015

\(\frac{45^3.20^4.18^2}{180^5}=\frac{5^3.9^3.5^4.4^4.4.9^2}{180^5}=\frac{5^7.9^5.4^5}{180^5}=\frac{5^2.180^5}{180^5}=5^2=25\)