a)5^26=5^13.2=10^13

10^13x4^13=40^13

b)27^15=(3^3)^15+3^45

9^10=(3^2)^10=3^20

3^20x3^45=3^65

c)5^12=5^3.4=(5^4)^3=625^3

0,125^3.625^3=625,125^3

d)0,375^40=0,375^2.20=(0.375^2)^20=0,750^20

9^20:0,750^20=1.0012^20

k me

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

bạn làm như bạn gia hân là đúng nhé

Bài 8:

a: \(\left(\dfrac{2}{5}+\dfrac{3}{4}\right)^2=\left(\dfrac{8+15}{20}\right)^2=\left(\dfrac{23}{20}\right)^2=\dfrac{529}{400}\)

b: \(\left(\dfrac{5}{4}-\dfrac{1}{6}\right)^2=\left(\dfrac{15}{12}-\dfrac{2}{12}\right)^2=\left(\dfrac{13}{12}\right)^2=\dfrac{169}{144}\)

\(a,\left(3^2\cdot5^2\cdot4^3\right):\left(8\cdot3^2\right)\)

\(=\frac{3^2\cdot5^2\cdot4^3}{8\cdot3^2}\)

\(=\frac{3^2\cdot5^2\cdot2^6}{2^3\cdot3^2}\)

\(=5^2\cdot2^3\)

\(=25\cdot8=200\)

\(b,\left(2^{10}\cdot13+2^9\cdot130\right):\left(2^8\cdot104\right)\)

\(=\frac{2^{10}\cdot13+2^9\cdot130}{2^8\cdot104}\)

\(=\frac{2^9\cdot\left(2\cdot13+130\right)}{2^8\cdot2^3\cdot13}\)

\(=\frac{2^9\cdot156}{2^{11}\cdot13}\)

\(=\frac{2^9\cdot2^3\cdot3\cdot13}{2^{11}\cdot13}\)

\(=\frac{2^{12}\cdot3\cdot13}{2^{11}\cdot13}\)

\(=2.3=6\)

a 200 nhe

Bạn nên viết đề bằng công thức toán (biểu tượng $\sum$ góc trái khung soạn thảo) để mọi người hiểu đề của bạn hơn.

\(\left(\dfrac{3}{5}\right)^{10}\cdot\left(\dfrac{5}{3}\right)^{10}-\dfrac{13^4}{39^4}+2014^0\)

=1-(1/3)^4+1

=4/3-1/81

=107/81

a) (4 * 5)^13 = 20^13 b) (27^16) / (9^10) = 3^(3*16) / 3^(2*10) = 3^48 / 3^20 c) (16^3) / (8^4) = 2^(4*3) / 2^(3*4) = 2^12 / 2^12 = 1

12 mũ 5 nhân 9 mũ 6 phần 27 mũ 5 nhân 2 mũ 12