Which of the following expressions is a polynomial? Find the degree and zeroes of the polynomial.

(i) (ii) x² +2x

In the above expressions, only the secondone has a positive power, unlike others.

∴ It is the only polynomial.

Equating the expression with 0,

x² + 2x = 0

x ( x+2) = 0

∴ x = 0 or x + 2 = 0

X = 0 Or x = -2

The zeroes of the polynomial x² +2x are 2 & -2, having a degree of 2, being the highest power of the terms in the same expression.