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.