SOLUTION: find the domain and range of each function. write your answer in interval notation. F(x)= x^2-5

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Question 771606: find the domain and range of each function. write your answer in interval notation. F(x)= x^2-5
Answer by lwsshak3(11628) About Me  (Show Source):
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find the domain and range of each function. write your answer in interval notation. F(x)= x^2-5
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Domain; all real numbers, (-∞,∞)
Range:
express x in terms of y
y=x^2-5
x^2=y+5
x=±√(y+5)
y+5≥0
y≥-5
Range: [-5,∞)