Question

Answer 1

`(x-1/3)^3 = 8/27`

`(x-1/3)^3 = (2/3)^3`

`x-1/3=2/3`

`x=2/3+1/3`

`x=3/3`

`x=1`

Vậy `x=1`

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`(x-1/8)^3=(-8/125)`

`(x-1/8)^3=(-2/5)^3`

`x-1/8=-2/5`

`x=-2/5+1/8`

`x=-16/40 + 5/40`

`x=-11/40`

Vậy `x=-11/40`

Answer 2

`a, (x-1/3)^3 = 8/27`

`=> x - 1/3 = 2/3`

`=> x = 1/3 + 2/3`

`=> x = 1`.

`b, (x-1/8)^3 = -8/125`

`=> x - 1/8 = -2/5`

`=> x = -2/5 + 1/8`

`=> x= -11/40`