The function f, of, x, equals, 3, x, to the power 4 , minus, 2, x, cubed, minus, 9, x, squared, plus, 12, x, minus, 4f(x)=3x
4
−2x
3
−9x
2
+12x−4 has at least two rational roots. Use the rational root theorem to find those roots, then proceed to find all complex roots. (Note: roots may be integer, rational, irrational, and/or complex.)
