Carlos graphed the system of equations that can be used to solve x cubed minus 2 x squared + 5 x minus 6 = negative 4 x squared + 14 x + 12. On a coordinate plane, 2 functions are shown. The functions intersect at (negative 3, negative 66), (negative 2, negative 32), and (3, 18) What are the roots of the polynomial equation? –3, –2, 3 –3, 2 18, 32 18, 32, 66