Which of the following is a polynomial? - Vidyadip

MCQ

Which of the following is a polynomial$?$

A
$\text{x}-\frac{1}{\text{x}}+2$
B
$\frac{1}{\text{x}}+5$
C
$\sqrt{\text{x}}+3$
✓
$-4$

✓

Answer

Correct option: D.

$-4$

A polynomial is an algebraic expression in which the variables involved have only non-negative integrals powers.
Option $(a), (b)$ and $(c)$ have negative and non-integral powers,
So they are not polynomials.
We know that, exery real number is a constant polynomial.
So, $-4$ being a real number is a polynomial.

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