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\(\dfrac{5^4.20^4}{25^5.4^5}=\dfrac{5^4.\left(4.5\right)^4}{\left(5^2\right)^5.4^5}=\dfrac{5^5.5^4.4^4}{5^{10}.4^5}=\dfrac{1}{4.5}=\dfrac{1}{20}\)
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a)4/5.(7/2+1/4)mũ 2
=4/5.(15/4)mũ 2
=4/5.225/16
=45/4
ý b bạn viết sai đề bài rồi hay sao ý
b) 5 mũ 4. 20 mũ 4/ 25 mũ 5. 4 mũ 5
=(5.20) mũ 4/ (25.4) mũ 5
=100 mũ 4/ 100 mũ 5
=100 mũ 4 : 100 mũ 5
=0,01
#CHÚC BẠN HỌC TỐT, CÓ GÌ KO HIỂU THÌ KẾT BẠN VÀ NHẮN TIN MIK NHA
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ta có : (ghi lại đề)
=6+12+18+24+30/3+6+9+12+15
=2*(3/3+6/6+9/9+12/12+15/15)
=2*(1+1+1+1+1)
=2*5=10
chúc main học tốt nhé
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Ta có:
\(\frac{5^5.20^4}{25^5.4^5}=\frac{5^5.5^4.4^4}{5^{10}.4^5}=\frac{5^9.4^4}{5^{10}.4^5}=\frac{1}{5.4}=\frac{1}{20}\)
\(\frac{5^5.20^4}{25^5.4^5}=\frac{5^5.\left(5.2^2\right)^4}{\left(5^2\right)^5.\left(2^2\right)^5}=\frac{5^5.5^4.2^8}{5^{10}.2^{10}}=\frac{5^9.2^8}{5^{10}.2^{10}}=\frac{1}{5.2^2}=\frac{1}{5.4}=\frac{1}{20}.\)
Chúc bạn học tốt!
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54. 204 / 255. 45 = (5 . 20)4 / (25 . 4)5 = 1004 / 1005 = 1004 / 100 . 1004 = 1/100
\(\frac{5^4.20^4}{25^5.4^5}=\frac{625.160000}{9765625.1024}=1048576\)
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\(\frac{5^4.20^4}{25^5.4^5}=\frac{5^4.\left(5.2^2\right)^4}{\left(5^2\right)^5.\left(2^2\right)^5}=\frac{5^4.5^4.2^8}{5^{10}.2^{10}}=\frac{5^8.2^8}{5^{10}.2^{10}}=\frac{1}{5^2.2^2}=\frac{1}{25.4}=\frac{1}{100}\)
ta có \(\frac{5^4.20^4}{25^5.4^5}=\frac{\left(5.20\right)^4}{\left(25.4\right)^5}=\frac{100^4}{100^5}=\frac{1}{100}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
5^4*20^4/25^5*45=5^4 *5^4*4^4/25^4*25*45=4^4/25*45=256/1125
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\(=\dfrac{2^{60}+2^{40}}{2^{50}+2^{30}}=2^{10}=1024\)