Question

State whether the given algebraic expression is polynomial? Justify.
$2-5\sqrt{x}$

Answer 1

An algebraic expression in which the variable involved have only non-negative integral powers is called a polynomial.

Here,

$2-5\sqrt{x}$ is not a polynomial

Because the second term $-5x^{\frac{1}{2}}$ is a term with an exponent which is not a non-negative integer