Find the cube roots of the following numbers:
`(i) 226981`
(ii) `-571787`
(iii) `-175616`

Explanation

(i) `226981`
`226981=61xx61xx61`
`root(3)(226981)=61`

(ii) `-571787`
`-571787=-83xx83xx83`
`-root(3)(571787)=-83`

(iii) `-175616`
`-175616=2^9xx7^3`
`-root(3)(175616)=-2xx2xx2xx7`
`-root(3)(175616)=-56`