Man if it is 3*sqrt(-89) it does not exist

Baskaranselva wrote:The value of 3 root -89 is

1. Between -9 and -10
2. Between -8 and -9
3. Between -4 and -5
4. Between -3 and -4
5. Undefined

Thanks
Baskaran[/img]

i guess its cube root (-89)

if thats the case then IMO its 3.

( -4)^3 = -64
(-5)^3 = -125

and -89 lies in this interval ... hence its C

Though i know cube roots of negatives exists just i was sure the square roots of negatives exists in advanced maths.. I am not sure if they exists on GMAT.

I request Ian/Stuart to give some insights on this one,..

Yes, it is cube root of -89.

Answer is C

Thanks