Posted by Anonymous on Monday, February 18, 2013 at 7:34pm.
If X^2-5 is the denom, then the domain would be all X such that the denom does not equal 0.
So find when x^2-5=0
x=sqrt(5) (Both positive and negative)
So the domain is all real numbers, such that X does not equal +- sqrt (5)
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