Without multiplying, explaining you know Bobby is incorrect

Enter the number of complex zeros for the polynomial function f(x) = x 4+ 5x² +6

The coordinates of vortex a’ are (8,4) (-4,2) (4,-,4) the coordinates of vortex b’ are (6,6)(12,-,12)(12,12) the coordinates of vortex c’ are(-2,,12)(4,12)(12,-4)

Which graph represents the linear function below? y-3=1/2(x+2)