Question 888523: Hello, my name is Casandra. How do you solve for the domain and range of x^2-5? (x^2 is equal to x squared the "2" is the exponent)
Answer by josmiceli(19441)   (Show Source):
You can put this solution on YOUR website! Hi,
As for the domain, you are being asked:
" What values of  are possible? "
You can plug any value of into the
equation, either positive, negative, or zero,
and the function, which is 
will return some number.
So, the domain is minus infinity to plus infinity
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As for the range, you are being asked:
" What values of the function
are possible? "
This function can be as large a positive number
as you want- just keep making more positive, or
you can keep making more and more negative
and the function gets more positive.
Also the function can be zero. Just make  , or
-------------------
But the function can only be as negative as 
There is nothing you can do to the  term to make
the function more negative than
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So, the range of is to plus infinity
Hope this helps
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