Respuesta :

Lilith
[tex]23)\\\\-\sqrt{\frac{1}{121}}=-\frac{\sqrt{1}}{\sqrt{121}}=-\frac{1}{11}[/tex]


AL2006
- √ (1/121)

You can break up the square root of a fraction like this: √(1/121) = √1 / √121 .

At this point, it helps if you know that 121=11x11, or  √121 = 11.

So, the original expression is

-  ( √1 / √121 ) = - ( 1 / 11 )   and there you are.  

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