f) 703 -140 : (42 + 28) - 17 mũ 15 : 17 mũ 13
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![](https://rs.olm.vn/images/avt/0.png?1311)
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\(703-140:\left(42+28\right)-17^6.17^9:17^{13}\)
\(=703-140:70-17^2\)
\(=701-17^2\)
\(=412\)
![](https://rs.olm.vn/images/avt/0.png?1311)
28^15x3^17/84^16
=28^15x3^17/(28x3)^16
=28^15x3^17/28^16x28^16
=3/28
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\left(3^{13}\cdot99-15\cdot3^{14}\right):\left(3^{17}:3^2\right)\)
\(=3^{13}\cdot\left(99-45\right):\left(3^{17-2}\right)\)
\(=3^{13}\cdot3^3\cdot2:3^{15}\)
\(=3^{16}:3^{15}\cdot2\)
\(=3\cdot2\)
\(=6\)
![](https://rs.olm.vn/images/avt/0.png?1311)
Ta có :
\(3^{15}+3^{16}+3^{17}\)
\(=3^{15}\cdot\left(1+3+3^2\right)=3^{15}\cdot13⋮13\)
\(\rightarrow3^{15}+3^{16}+3^{17}⋮13\left(đpcm\right)\)
Ta có : \(3^{15}+3^{16}+3^{17}\)
\(=3^{15}\cdot\left(1+3+3^2\right)=3^{15}\cdot13⋮13\)
\(\Rightarrow3^{15}+3^{16}+3^{17}⋮13\)(đpcm)
![](https://rs.olm.vn/images/avt/0.png?1311)
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1. 53 = 5.5.5 = 125
2. 27 = 2.2.2.2.2.2.2 = 128
3. 44 = 4.4.4.4 = 256
4. 73 = 7.7.7 = 343
6. 35 = 243
7. 26 = 64
8. 34 = 81
9. 83 = 512
11. 132 = 169
12. 112 = 121
13. 142 = 196
14. 152 = 225
16. 172 = 289
17. 182 = 324
18. 192 = 361
19. 202 = 400
21. 104 = 10000
22. 105 = 100000
23. 106 = 1000000
24. 107 = 10000000
![](https://rs.olm.vn/images/avt/0.png?1311)
a,5 mũ 15
b,3 mũ 0=1
c,11 mũ 3
d,10 mũ 2
e,17 mũ 0=1
g,25 mũ 17
f,16 mũ 3
Chúc bạn học tốt,nhớ k cho mình nha
f: =703-2-289=703-291=412
\(703-140:\left(42+28\right)-17^{15}:17^{13}\)
\(=730-140:70-17^2\)
\(=730-2-289\)
\(=439\)