Question

Which of the following are polynomials?
a)$x^{2} - \frac{x}{2} +2$
b) $x^{2} - \frac{3}{ x^{2} } +2$
c) $x^{4} - \frac{3}{ x^{-2} } +2 x^{3} +5$
d) $x^{4} + 2 x^{3} +9 x^{-2} +6$
e) $x^{3} - 3$

Answer 1

a) and e) as they have variable with positive integral power.

Answer 2

x³-3 is the polynomial