Which of the following is an example of polynomial equation?


a.
3x-4 + 2x3 - 11x2 + 10


b.
3x4 - 2x3 + 7x2 -15


c.
4/x3 - 2/x2 - 1/x + 6


d.
-5x4 + 8x2 + 9√x + 17