# GSEB Solutions Class 8 Maths Chapter 9 Algebraic Expressions and Identities Ex 9.1

Gujarat Board GSEB Textbook Solutions Class 8 Maths Chapter 9 Algebraic Expressions and Identities Ex 9.1 Textbook Questions and Answers.

## Gujarat Board Textbook Solutions Class 8 Maths Chapter 9 Algebraic Expressions and Identities Ex 9.1

Question 1.
Identify the terms, their coefficients for each of the following expressions?

1. 5xyz2 – 3zy
2. 1 + x + x2
3. 4x2y2 – 4x2y2z2 + z2
4. 3 – pq + qr – rp
5. $$\frac{x}{2}$$ $$\frac{y}{2}$$ xy
6. 0.3a – 0.6 ab + 0.5b

Solution:
1. 5xyz2 – 3zy

2. 1 + x + x2

3. 4x2y2 – 4x2y2z2 + z2

4. 3 – pq + qr – rp

5. $$\frac{x}{2}$$ + $$\frac{y}{2}$$ – xy

6. 0.3a – 0.6ab + 0.5b

Question 2.
Classify the following polynomials as monomials, binomials, trinomials. Which polynomials do not fit in any of these three categories?
x + y, 1000, x + x2 + x3 + x4, 7 + y + 5x, 2y – 3y2, 2y – 3y2, 2y – 3y2 + 4y3, 5x – 4y + 3xy, 4z – 15z2, ab + bc + cd + da, pqr, p2q + pq2, 2p + 2q
Solution:

Following polynomials do not fit in any of these categories:
x + x2 + x3 + x4 [∵ It has 4 terms]
ab + bc + cd + da [∵It has 4 terms]

Question 3.