# Which of the following is a polynimial?

Question:

Which of the following is a polynimial?

(a) $x-\frac{1}{x}+2$

(b) $\frac{1}{x}+5$

(c) $\sqrt{x}+3$

(d) $-4$

Solution:

(d) −4

-4 is a constant polynomial of degree zero.