1. Which of the following is a polynomial function?
a. P(x) = 3x³8x² + 3x + 2 1
b. P(x) = x³+4x²+x-6
c. P(x) = 2x + x² + 2x + 1 6
d. G(x) = 4x² - ŕ + 2x + 1​