Polynomials Class - 9 Ex-2.1, Q1, Q2, Q3, Q4, Q5 Maths NCERT CBSE Board

Class-9th, Ex-2.1 (All Questions), Polynomials, Maths CBSE NCERT Book.

Chapter-2, Class-9, EXERCISE 2.1

1. Which of the following expressions are polynomials in one variable and which are
not? State reasons for your answer.
(i) 4x2 – 3x + 7 (ii) y2
+ 2 (iii) 3 2 t t + (iv) y+
2/y
(v) x10 + y3
+ t50

2. Write the coefficients of x2 in each of the following:
(i) 2 + x2
+ x (ii) 2 – x2 + x3
(iii)
π/2 x2 + x (iv) 2 1 x −

3. Give one example each of a binomial of degree 35, and of a monomial of degree 100.

4. Write the degree of each of the following polynomials:
(i) 5x3 + 4x2
+ 7x (ii) 4 – y2
(iii) 5t – 7 (iv) 3

5. Classify the following as linear, quadratic and cubic polynomials:
(i) x2 + x (ii) x – x3
(iii) y + y2
+ 4 (iv) 1 + x
(v) 3t (vi) r2
(vii) 7x

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