Question

Which of the following algebraic expressions are polynomials?

$\frac{1}{5}-2y$

Answer 1

An algebraic expression can be called a polynomial if the power of terms of the expression is whole numbers. It should not be a radical power or a negative integer.

Given expression is $\frac{1}{5}-2y$ $=\frac{1}{5}{y}^0-2y^1$

Here the power of expression is $1$ and $0$

Since all the powers are whole numbers.

Hence, the given expression is polynomial.