Question

Solutio
he
1.
EXERCISE 2.1
Which of the following expressions are polynomials in one variable and which
not? State reasons for your answer
(1) 4
$4 {x}^{2} - 3x + 7$
​

Answer 1

Answer:

(ii) y2+

√

2

Answer: Since, the given expression has only one variable ‘y’, hence this is a polynomial in one variable.

(iii) 3

√

t

+t

√

2

Answer: Since, variable, ‘t’ in this expression exponent of variable is not a whole number. [Exponent of a variable in a polynomial must be a whole number. Expression with exponent of a variable in fraction is not considered as a polynomial.]

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