Find the range of the polynomial function .

MATHEMATICS · Single correct · AP · AP Precalculus · Polynomial and Rational Functions · Polynomial and Rational Functions

Problem

Find the range of the polynomial function

h(x)=x^4-8x^2+15

. (a)

[0,\infty)

(b)

[-1,\infty)

(c)

[15,\infty)

(d)

(-\infty,-1]