Question

(\(\dfrac{-1}{3}\))³+\(\dfrac{8}{9}\) - \(\dfrac{26}{27}\)

Giúp mình vs.Cảm ơn mn

Answer 1

\(\left(-\dfrac{1}{3}\right)^2+\dfrac{8}{9}-\dfrac{26}{27}\)

\(=\dfrac{1}{9}+\dfrac{8}{9}-\dfrac{26}{27}\)

\(=1-\dfrac{26}{27}=\dfrac{1}{27}\)

Answer 2

`(-1/3)^3 + 8/9 - 26/27`

`=-1/27 + 8/9 - 26/27`

`=(-1/27 - 26/27) + 8/9`

`= -1 + 8/9`

`= -1/9`