1=1^2 ;125=5^3 ;-125=-5^3; 27=27^1; -27= -27^1

2: 5^2 25^1 

a, \(-\dfrac{8}{27}=\left(-\dfrac{2}{3}\right)^3\)

b, \(\dfrac{81}{625}=\left(\dfrac{3}{5}\right)^4\)

c, \(27\cdot81=3^3\cdot3^4=3^7\)

d, \(\dfrac{2}{5}\cdot\dfrac{8}{125}\cdot\dfrac{16}{625}=\dfrac{2\cdot2^3\cdot2^4}{5\cdot5^3\cdot5^4}=\left(\dfrac{2}{5}\right)^8\)

a: =(-2/3)^3

b: =(3/5)^4

c: =3^3*3^4=3^7

d: =2/5*(2/5)^3*(2/5)^4=(2/5)^8

1/81 = (1/9)^2

243 = 3^5

8. 3^3 = 2^3 . 3^3 = 6^3 

81.2^8 = 9^2 . (2^4)^2 = 9^2 . 16^2 = ( 9. 16)^2 =  144^2  

125=5³=

-125=(-5)³

27=3³

-27=(-3)³

125 =5³ - 125=(-5)³ ; 27 =3³; - 27 =(-3)³

a: \(A=8^2\cdot32^4=2^6\cdot2^{20}=2^{26}\)

b: \(B=27^3\cdot9^4\cdot243=3^9\cdot3^8\cdot3^5=3^{22}\)

a: \(A=\left(2^3\right)^2\cdot\left(2^5\right)^4=2^6\cdot2^{20}=2^{26}\)

b: \(=\left(3^3\right)^3\cdot\left(3^2\right)^4\cdot3^5=3^9\cdot3^8\cdot3^5=3^{22}\)

\(A=8^2.32^4=\left(2^3\right)^2.\left(2^5\right)^4=2^6.2^{20}=2^{26}\)

\(B=27^3.9^4.243=\left(3^3\right)^3.\left(3^2\right)^4.3^5=3^9.3^8.3^5=3^{22}\)

a) 2.2.2.2 = \({2^4}\). Cơ số 2, số mũ 4

b) 5.5.5 = \({5^3}\). Cơ số 5, số mũ 3

\(125=5^3\)

\(-125=\left(-5\right)^3\)

\(27=3^3\)

\(-27=\left(-3\right)^3\)

 ^...^ ^_^

Bài 11: Viết các số sau dưới dạng lũy thừa với số mũ khác 1:

125 = 5³

(-125) = (-5)³

27 = 3³

(-27) = (-3)³