SOLUTION: This has to do with evaluating rational exponents... I am trying to figure out how -9 ^1/2 can = -3 ? I though a negative and negative = a positive. Could you explain please

Algebra ->  Exponents -> SOLUTION: This has to do with evaluating rational exponents... I am trying to figure out how -9 ^1/2 can = -3 ? I though a negative and negative = a positive. Could you explain please      Log On


   

Question 950727: This has to do with evaluating rational exponents...
I am trying to figure out how -9 ^1/2 can = -3 ?
I though a negative and negative = a positive.
Could you explain please?
Thank you!
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
I think it's like this,
-%289%5E%281%2F2%29%29=-sqrt%289%29=-%283%29=-3