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Which of the following expression are polynomial? Justify your answer: 1-5x

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Question

Which of the following expression are polynomial? Justify your answer:

`1 - sqrt(5)x`

Sum
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Solution

`1 - sqrt(5)x = 1 - sqrt(5)x^(1/2)`

Here, the power of `x = 1/2`, which is not a whole number.

Hence, `1 - sqrt(5)x` is not a polynomial.

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Chapter 2: Polynomials - Exercise 2.2 [Page 16]

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NCERT Exemplar Mathematics Exemplar [English] Class 9
Chapter 2 Polynomials
Exercise 2.2 | Q 1. (iii) | Page 16

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