NCERT Solutions for Class 8 Maths Chapter 9 Algebraic Expressions and Identities Ex 9.3 are part of NCERT Solutions for Class 8 Maths. Here we have given NCERT Solutions for Class 8 Maths Chapter 9 Algebraic Expressions and Identities Ex 9.3.

- Algebraic Expressions and Identities Class 8 Ex 9.1
- Algebraic Expressions and Identities Class 8 Ex 9.2
- Algebraic Expressions and Identities Class 8 Ex 9.4
- Algebraic Expressions and Identities Class 8 Ex 9.5

Board |
CBSE |

Textbook |
NCERT |

Class |
Class 8 |

Subject |
Maths |

Chapter |
Chapter 9 |

Chapter Name |
Algebraic Expressions and Identities |

Exercise |
Ex 9.3 |

Number of Questions Solved |
5 |

Category |
NCERT Solutions |

## NCERT Solutions for Class 8 Maths Chapter 9 Algebraic Expressions and Identities Ex 9.3

**Ex 9.3 Class 8 Maths Question 1.**

Carry out the multiplication of the expressions in each of the following pairs :

**(i)** 4p, q r + r

**(ii)** ab, a – -b

**(iii)** a + b, 7a^{2}b^{2}

**(iv)** a^{2}– 9, 4a

**(v)** pq + qr + rp, 0

**Solution:**

**(i)** 4p x (q + r) = 4px q + 4p x r

= 4pq + 4pr

**(ii)** ab x (a – b) = ab x a – ab

= a^{2}b – ab^{2}

**(iii)** (a + b) x 7a^{2}b^{2} = a x 7a^{2}b^{2} + b x 7a^{2}b^{2}

= 7a^{3}b^{2} + 7a^{2}b^{3}

**(iv)** (a^{2} -9)x 4a = a^{2} x 4a – 9 x 4a

= 4a^{3} – 36a

**(v)** (pq + qr + rp) x 0 = 0

**Ex 9.3 Class 8 Maths Question 2.**

Complete the table :

**Solution:**

Completed table is as under :

**Ex 9.3 Class 8 Maths Question 3.**

Find the product:

**Solution:**

**Ex 9.3 Class 8 Maths Question 4.**

**(a)** Simplify : 3x (4x – 5) + 3 and find its value for

**(i)** x = 3,

**(ii)** x = \(\frac { 1 }{ 2 } \)

**(b)** Simplify : a (a^{2} + a + 1) + 5 and find its value for

**(i)** a = 0,

**(ii)** a = 1,

**(iii)** a = – 1

**Solution:**

**Ex 9.3 Class 8 Maths Question 5.**

**(a)** Add : p (p – q), q (q – r) and r (r – p)

**(b)** Add : 2x (z – x – y) and 2y (z – y – x)

**(c)** Subtract : 31 (1 – 4m + 5n) from 41 (10n – 3m + 21)

**(d)** Subtract : 3a (a + b + c) – 2b (a – 6 + c) from 4c (-a + b + c)

**Solution:**

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