11. for h(x) = -14x® +166x2 – 16x4 + 2x? +24+8x +30x' +120x
in hex)=2x²-14 x 6 + 8x8 - 16x" -
nox
- 166*² +120x +21
a) find the range of h(x)
b) what is the coordinate of the y-intercept of h(x)?
c) list the distinct, possible rational roots
d) given that x = 2i, x=1+2, and x = -1 are all roots of h(x), use and show) synthetic division to find a
the exact values of the other complex roots. list all you final roots at the ends as x =