MCQ
Which of the following is a polynomial?
- A$x^{-2}+x^{-1}+3$
- B$x+x^{-1}+2$
- C$x^{-1}$
- ✓$0$
✓
Answer
Correct option: D.
$0$
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, 0 being a real number is a polynomial.
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, 0 being a real number is a polynomial.
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