Question

Which of the following is not a polynomial?
(A) x-1
(B) (x-1)(x+1)
(C) $x-\frac{1}{x}$
(D) $\sqrt{3} x^2+2x+5$

Answer 1

I think C is not a polynomial...

Answer 2

Option ( C ) is correct.

Explanation :

In x - 1/x is not a polynomial ,because

it can be written as x - x^-1 .

Here , the second term ( x^-1 ) has a

negative exponent ( i.e , .-1 )

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An algebraic expression in which the

variables involved have only

non- negative integral powers is called

a polynomial .

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