2. Which of the following is a polynomial function?
a. P
P(x) = 5x3 - 4x2 + 3 + 5
b. P(x) = 7x2 - 6x2 + 9x - 10
X
c. P(x) = 4x3 + 5x2 + 7
d. P(x) = 5x3 + 4x2 - 3Vx - 11
IL
-2.5​