Find the cube root of each of the following numbers: `8\ xx\ 125` (ii) `-1728 xx 216` (iii) `-27\ xx\ 2744` (iv) `-729 xx-15625`

Explanation

(i) `8xx125`
`8xx125=2xx2xx2xx5xx5xx5`
`root(3)(8xx125)=2xx5=10`

(ii) `-1728xx216`
`-1728xx216=-1xx12xx12xx12xx6xx6xx6`
`-root(3)(1728xx216)=-12xx6=-72`

(iii) `-27xx2744`
`-27xx2744=-1xx3xx3xx3xx14xx14xx14`
`-root(3)(27xx2744)=-3xx14=42`

(iv) `-729xx(-15625)`
=`729xx15625=9xx9xx9xx25xx25xx25`
`root(3)(729xx15625)=9xx25=225`