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2:
a: n=5^4
=>n=625
b: n^3=125
=>n^3=5^3
=>n=5
c: 11^n=1331
=>11^n=11^3
=>n=3
![](https://rs.olm.vn/images/avt/0.png?1311)
`3.5 .15.15 = 3.5.3.5.3.5 = 3^3.5^3`
`2.2.5.2.5 = 2^3 . 5^2`
`1000.10 .10 = 10^3 .10^1 . 10^1 = 10^5`
`a.a.a.b.b.b = a^3 . b^3`
`n.n.n + p.p = n^3 . p^2`
a: =15*15*15=15^3
b: =2^3*5^2
c: =10^3*10^2=10^5
d: =a^3*b^3
e: =n^3+p^2
![](https://rs.olm.vn/images/avt/0.png?1311)
3.
a) 4.4.4.4.4 = 45
b) 3.3.3.5.5.5 = 33 . 53
4.
a) 35 . 34 = 39
b) 53 . 55 = 58
c) 22
Hk tốt
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![](https://rs.olm.vn/images/avt/0.png?1311)
a)\(3.3.3.4.4.4=3^3.4^3=12^3\)
b)\(a.a.a+b.b.b.b=a^3+b^4\)
Chúc hk tốt nha!!!
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5.5.3.15.25.9 = 5.5.3.3.5.5.5.3.3 = 5^5.3^4
9.21.7.9.49 = 3.3.3.7.7.3.3.7.7 = 3^5.7^4
10.2.5.4.25.10 = 2.5.2.5.2.2.5.5.2.5 = 2^5.5^5
8.4.10.25 = 2.2.2.2.2.2.5.5.5 = 2^6.5^3
515:53 = 515-3 = 512
15.5.9.15.625.81
= 3.5.5.3.3.3.5.5.5.5.5.3.3.3.3 = 3^8.5^6
18.42.7.9.49 = 2.3.3.2.3.7.7.3.3.7.7 =2^2.3^5.7^4
121.2.125.4.25.11
= 11.11.2.5.5.5.2.2.5.5.11 = 11^3.2^3.5^5
36.4.15.75 = 2.3.2.3.2.2.3.5.5.5.3
= 2^4.3^4.5^3
3^7.5^18.15^6 = 3^7.5^18. 3^6.5^6 = 3^13.5^24
Viết lại đề:
a)\(5.5.4.15.25.9\)
b)\(9.21.7.3.49\)
c)\(3^7.5^{18}:15^6\)
d)\(2.4.8.16.32.64...3^9\)
e)\(3.27.243...3^9\)
Bài 2:
a)\(5^x+3< 5^6\)
b)\(\left(3^2\right)^2+2^{x=5}.\left(5+2^2.3\right)\)
Mik chỉ ghi lại đề cho mn dễ giải thui chứ tui lười giải :D