Question

Tính:

`1) (2/3)^4 :2^4`

`2) (2/3)^4 .9^2`

`3) (1/2)^3 . (1/4)^2`

`4) 120^6/40^3`

`5) 390^4/130^3`

 

 

Answer 1

1: \(=\left(\dfrac{2}{3}:2\right)^4=\left(\dfrac{1}{3}\right)^4\)

2: \(=\left(\dfrac{2}{3}\right)^4\cdot3^4=2^4=16\)

3: \(=\left(\dfrac{1}{2}\right)^{3+4}=\left(\dfrac{1}{2}\right)^7\)

4: \(=\dfrac{40^6\cdot30^6}{40^3}=40^3\cdot30^6\)