## RD Sharma Class 8 Solutions Chapter 6 Algebraic Expressions and Identities Ex 6.1

These Solutions are part of RD Sharma Class 8 Solutions. Here we have given RD Sharma Class 8 Solutions Chapter 6 Algebraic Expressions and Identities Ex 6.1

**Other Exercises**

- RD Sharma Class 8 Solutions Chapter 6 Algebraic Expressions and Identities Ex 6.1
- RD Sharma Class 8 Solutions Chapter 6 Algebraic Expressions and Identities Ex 6.2
- RD Sharma Class 8 Solutions Chapter 6 Algebraic Expressions and Identities Ex 6.3
- RD Sharma Class 8 Solutions Chapter 6 Algebraic Expressions and Identities Ex 6.4
- RD Sharma Class 8 Solutions Chapter 6 Algebraic Expressions and Identities Ex 6.5
- RD Sharma Class 8 Solutions Chapter 6 Algebraic Expressions and Identities Ex 6.6
- RD Sharma Class 8 Solutions Chapter 6 Algebraic Expressions and Identities Ex 6.7

**Question 1.**

**Identify the terms, their co-efficients for each of the following expressions.**

**(i) 7x ^{2}yz – 5xy**

**(ii) x**

^{2}+ x + 1**(iii)3x**

^{2}y^{2}– 5x^{2}y^{2}+ z^{2}+ z^{2}**(iv) 9 – ab + be-ca**

**(v) \(\frac { a }{ 2 } +\frac { b }{ 2 }\)-ab**

**(vi)2x – 0.3xy + 0.5y**

**Solution:**

**(i)**Co-efficient of 7x

^{2}yz = 7

co-efficient of -5xy = -5

**(ii)**Co-efficient of x

^{1}= 1

co-efficient of x = 1

co-efficient of 1 = 1

**(iii)**Co-efficient of 3x

^{2}_y

^{2}= 3

co-efficient of -5x

^{2}y

^{2}z

^{2}= -5

co-efficient of z

^{2}– 1

**(iv)**Co-efficient of 9 = 9

co-efficient of -ab = -1

co-efficient of be = 1

co-efficient of -ca = -1

**(v)**Co-efficient of \(\frac { a }{ 2 } =\frac { 1 }{ 2 }\)

Co-efficient of \(\frac { b }{ 2 } =\frac { 1 }{ 2 }\)

co-efficient of -ab = -1

**(vi)**co-efficient of 0.2x = 0.2

co-efficient of-0.3xy = -0.3

co-efficient of 0.5y = 0.5

**Question 2.
**

**Classify the following polynomials as monomials, binomials, trinomials. Which polynomials do not fit in any category ?**

**(i) x+y**

**(ii) 1000**

**(iii) x + x**

^{2}+ x^{3}+ x^{4}**(iv) 7 + a + 5b**

**(v) 2b – 3 b**

^{2}**(vi) 2y – 3y**

^{2}+4y^{3}**(vii) 5x – 4y + 3x**

**(viii) 4a – 15a**

^{2 }(ix) xy+yz + zt + tx**(x) pqr**

**(xi) p**

^{2}q + pq^{2}**(xii) 2p + 2 q**

**Solution:**

Monomials are (ii), (x)

Binomials are (i), (v), (viii), (xi), (xii)

Trinomials are (iv), (vi) and (vii)

None of these are (iii) and (ix)

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