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Give the domain and range of y=5/x^2+5

Please list the domain and range of this function

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Kirill Z. | Physics, math tutor with great knowledge and teaching skillsPhysics, math tutor with great knowledge...
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Is it 5/x2+5 or 5/(x2+5)? In the first case domain is (-∞;0)∪(0;∞) or simply all x≠0. In the second case domain is all x∈R
 
In the first case the range is from 5 to infinity, 5 not included; (5;∞). In the second case, the range is (0;1].