Mathematics

Mathematics

Problem

Find the range of the polynomial function h(x)=x4−8x2+15h(x)=x^4-8x^2+15. a) [0,∞)[0,\infty) b) [−1,∞)[-1,\infty) c) [15,∞)[15,\infty) d) (−∞,−1](-\infty,-1]

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