SOLUTION: what is the Domain and Range of F(x) = X^2-4

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Question 621374: what is the Domain and Range of F(x) = X^2-4
Answer by KMST(1869) About Me  (Show Source):
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The domain is the set of numbers for which the function is defined/has a value.
The function f%28x%29=x%5E2-4 can be calculated for any real number value of x, so the domain is the set of all real numbers.
x%5E2%3E=0 --> f%28x%29=x%5E2-4%3E=-4
so the range of the function is all real numbers, y, such that y%3E=-4