CBSE Class 10 Maths (Standard) 2020 · Paper 30/2/1 · Question 21

Polynomials 2 marks Medium

A teacher asked 10 of his students to write a polynomial in one variable on a paper and then to handover the paper. The following were the answers given by the students:

2 x + 3

3 x^{2} + 7 x + 2

4 x^{3} + 3 x^{2} + 2

x^{3} + 3 x + 7

7 x + 7

5 x^{3} - 7 x + 2

2 x^{2} + 3 - \frac{5}{x}

5 x - \frac{1}{2}

a x^{3} + b x^{2} + c x + d

x + \frac{1}{x}

. Answer the following questions:

(i)How many of the above ten, are not polynomials?[1]
(ii)How many of the above ten, are quadratic polynomials?[1]

Answer

(i)

3

of the ten are not polynomials; (ii)

1

of them is a quadratic polynomial.

🔒 Step-by-step solution

From the board paper

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CBSE Class 10 Maths (Standard) 2020 · Paper 30/2/1 · Question 21

Answer

From the board paper

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