Question 1210376
<pre>
Notice that I have added something to the above answer.  This part:

What is under the radical in the denominator must be positive, not negative or
0.  Remember that -x can never be negative.

{{{1-(sqrt(-x))^2}}}{{{"">""}}}{{{0}}}
{{{-(sqrt(-x))^2}}}{{{"">""}}}{{{-1}}}
{{{(sqrt(-x))^2}}}{{{""<""}}}{{{1}}}
{{{-x}}}{{{""<""{{{""<""}}}{{{1}}}
{{{x}}}{{{"">""}}}{{{-1}}}

Remember again that -x is non-negative. 

{{{-x}}}{{{""=""}}}{{{1}}}

{{{x}}}{{{""=""}}}{{{-1}}} and since x is never positive but can be 0,

the domain is {{{-1<x<=0}}}

Edwin</pre>