If g(x)=2x2−5g(x) = 2x^2 - 5g(x)=2x2−5, what is the range of g(x)g(x)g(x)?
(−∞,−5](-\infty, -5](−∞,−5]
(−∞,∞)(-\infty, \infty)(−∞,∞)
[−5,∞)[-5, \infty)[−5,∞)
(0,∞)(0, \infty)(0,∞)