SOLUTION: What is the domain of l(x)= 3/(x^2+7)?

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Question 107222: What is the domain of l(x)= 3/(x^2+7)?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
l%28x%29=+3%2F%28x%5E2%2B7%29
The domain is the values of x where l(x) is defined.
The only issue is if the denominator equals zero since division by zero is undefined.
Since the denominator contains a square of x, it will always be greater than zero.
Therefore the domain is all x from (-infinity, infinity).