X^(3) -4;x=(2)/(3)

Question

`x^(3) -4;x=(2)/(3)`

Answer 1

Answer: -100/27

Explanation:

`x^3 - 4`=

`((2)/(3) )^3 - 4`=

`((2^3)/(3^3) ) - 4`=

`(8)/(27) - 4`=

(
`(8)/(27) - 4`)*27/27= ==> multiply by 27 to get rid of denominator

(8-4*27)/27=

(8-108)/27=-100/27