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NCERT solutions for Mathematics [English] Class 8 chapter 12 - Factorisation [Latest edition]

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NCERT solutions for Mathematics [English] Class 8 chapter 12 - Factorisation - Shaalaa.com
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Solutions for Chapter 12: Factorisation

Below listed, you can find solutions for Chapter 12 of CBSE NCERT for Mathematics [English] Class 8.


EXERCISE 12.1EXERCISE 12.2EXERCISE 12.3
EXERCISE 12.1 [Pages 148 - 149]

NCERT solutions for Mathematics [English] Class 8 12 Factorisation EXERCISE 12.1 [Pages 148 - 149]

1. (i)Page 148

Find the common factors of the terms.

12x, 36

1. (ii)Page 148

Find the common factors of the terms.

2y, 22xy

1. (iii)Page 148

Find the common factors of the terms.

14pq, 28p2q2

1. (iv)Page 148

Find the common factors of the terms.

2x, 3x2, 4

1. (v)Page 148

Find the common factors of the terms.

6 abc, 24ab2, 12a2b

1. (vi)Page 148

Find the common factors of the terms.

16x3, −4x2, 32x

1. (vii)Page 148

Find the common factors of the terms.

10pq, 20qr, 30rp

1. (viii)Page 148

Find the common factors of the terms.

3x2y3, 10x3y2, 6x2y2z

2. (i)Page 148

Factorise the following expression:

7x − 42

2. (ii)Page 148

Factorise the following expression:

6p − 12q 

2. (iii)Page 148

Factorise the following expression:

7a2 + 14a

2. (iv)Page 148

Factorise the following expression:

−16z + 20z3

2. (v)Page 148

Factorise the following expression:

20 l2m + 30 alm

2. (vi)Page 148

Factorise the following expression:

5x2y − 15xy

2. (vii)Page 148

Factorise the following expression:

10a2 − 15b2 + 20c2

2. (viii)Page 148

Factorise the following expression:

− 4a2 + 4ab − 4 ca

2. (ix)Page 148

Factorise the following expression:

x2yz + xy2z + xyz2

2. (x)Page 148

Factorise the following expression:

ax2y + bxy2 + cxyz

3. (i)Page 148

Factorise

x2 + xy + 8x + 8y

3. (ii)Page 148

Factorise.

15xy − 6x + 5y − 2

3. (iii)Page 149

Factorise.

ax + bx − ay − by

3. (iv)Page 149

Factorise.

15pq + 15 + 9q + 25p

3. (v)Page 149

Factorise.

z − 7 + 7xy − xyz

EXERCISE 12.2 [Pages 151 - 152]

NCERT solutions for Mathematics [English] Class 8 12 Factorisation EXERCISE 12.2 [Pages 151 - 152]

1. (i)Page 151

Factorise the following expression. 

a2 + 8a + 16

1. (ii)Page 151

Factorise the following expression.

p2 − 10p + 25

1. (iii)Page 151

Factorise the following expression.

25m2 + 30m + 9

1. (iv)Page 151

Factorise the following expression.

49y2 + 84yz + 36z2

1. (v)Page 151

Factorise the following expression.

4x2 − 8x + 4 

1. (vi)Page 151

Factorise the following expression.

121b2 − 88bc + 16c2

1. (vii)Page 151

Factorise the following expression.

(l + m)2 − 4lm (Hint: Expand (l + m)2 first)

1. (viii)Page 151

Factorise the following expression.

a4 + 2a2b2 + b4

2. (i)Page 151

Factorise.

4p− 9q2

2. (ii)Page 151

Factorise.

63a2 − 112b2

2. (iii)Page 151

Factorise.

49x2 − 36

2. (iv)Page 151

Factorise.

16x5 − 144x3

2. (v)Page 151

Factorise.

(l + m)2 − (l − m)2

2. (vi)Page 151

Factorise.

9x2y2 − 16

2. (vii)Page 151

Factorise.

(x2 − 2xy + y2) − z2

2. (viii)Page 151

Factorise.

25a2 − 4b+ 28bc − 49c2

3. (i)Page 151

Factorise the expression.

ax2 + bx

3. (ii)Page 151

Factorise the expression.

7p2 + 21q2

3. (iii)Page 151

Factorise the expression.

2x3 + 2xy2 + 2xz2

3. (iv)Page 151

Factorise the expression.

am2 + bm2 + bn2 + an2

3. (v)Page 151

Factorise the expression.

(lm + l) + m + 1

3. (vi)Page 151

Factorise the expression.

y (y + z) + 9 (y + z)

3. (vii)Page 151

Factorise the expression.

5y2 − 20y − 8z + 2yz

3. (viii)Page 151

Factorise the expression.

10ab + 4a + 5b + 2

3. (ix)Page 151

Factorise the expression.

6xy − 4y + 6 − 9x

4. (i)Page 152

Factorise.

a4 − b4

4. (ii)Page 152

Factorise.

p4 − 81

4. (iii)Page 152

Factorise.

x4 − (y + z)4

4. (iv)Page 152

Factorise.

x4 − (x − z)4

4. (v)Page 152

Factorise.

a4 − 2a2b2 + b4

5. (i)Page 152

Factorise the following expression.

p2 + 6p + 8

5. (ii)Page 152

Factorise the given expression.

q2 − 10q + 21

5. (iii)Page 152

Factorise the given expression.

p2 + 6p − 16

EXERCISE 12.3 [Page 155]

NCERT solutions for Mathematics [English] Class 8 12 Factorisation EXERCISE 12.3 [Page 155]

1. (i)Page 155

Carry out the following division:

28x4 ÷ 56x

1. (ii)Page 155

Carry out the following divisions:

−36y3 ÷ 9y2

1. (iii)Page 155

Carry out the following divisions:

66pq2r3 ÷ 11qr2

1. (iv)Page 155

Carry out the following divisions:

34x3y3z3 ÷ 51xy2z3

1. (v)Page 155

Carry out the following divisions:

12a8b8 ÷ (−6a6b4)

2. (i)Page 155

Divide the given polynomial by the given monomial.

(5x2 − 6x) ÷ 3x

2. (ii)Page 155

Divide the given polynomial by the given monomial.

(3y− 4y6 + 5y4) ÷ y4

2. (iii)Page 155

Divide the given polynomial by the given monomial.

8(x3y2z2 + x2y3z2 + x2y2z3) ÷ 4x2y2z2

2. (iv)Page 155

Divide the given polynomial by the given monomial.

(x3 + 2x2 + 3x) ÷ 2x

2. (v)Page 155

Divide the given polynomial by the given monomial.

(p3q6 − p6q3) ÷ p3q3

3. (i)Page 155

Work out the following division:

(10x − 25) ÷ 5

3. (ii)Page 155

Work out the following division:

(10x − 25) ÷ (2x − 5)

3. (iii)Page 155

Work out the following division:

10y(6y + 21) ÷ 5(2y + 7)

3. (iv)Page 155

Work out the following division:

9x2y2(3z − 24) ÷ 27xy(z − 8)

3. (v)Page 155

Work out the following division:

96abc(3a − 12)(5b − 30) ÷ 144(a − 4) (b − 6)

4. (i)Page 155

Divide as directed.

5(2x + 1) (3x + 5) ÷ (2x + 1)

4. (ii)Page 155

Divide as directed.

26xy(x + 5) (y − 4) ÷ 13x(y − 4)

4. (iii)Page 155

Divide as directed.

52pqr (p + q) (q + r) (r + p) ÷ 104pq (q + r) (r + p)

4. (iv)Page 155

Divide as directed.

20(y + 4) (y2 + 5y + 3) ÷ 5(y + 4)

4. (v)Page 155

Divide as directed.

 x(x + 1) (x + 2) (x + 3) ÷ x(x + 1)

5. (i)Page 155

Factorise the expression and divide them as directed.

(y2 + 7y + 10) ÷ (y + 5)

5. (ii)Page 155

Factorise the expression and divide them as directed.

(m2 − 14m − 32) ÷ (m + 2)

5. (iii)Page 155

Factorise the expression and divide them as directed.

(5p2 − 25p + 20) ÷ (p − 1)

5. (iv)Page 155

Factorise the expression and divide them as directed.

4yz(z2 + 6z − 16) ÷ 2y(z + 8)

5. (v)Page 155

Factorise the expression and divide them as directed.

5pq(p2 − q2) ÷ 2p(p + q)

5. (vi)Page 155

Factorise the expression and divide them as directed.

12xy(9x2 − 16y2) ÷ 4xy(3x + 4y)

5. (vii)Page 155

Factorise the expression and divide them as directed.

39y3(50y2 − 98) ÷ 26y2(5y + 7)

Solutions for 12: Factorisation

EXERCISE 12.1EXERCISE 12.2EXERCISE 12.3
NCERT solutions for Mathematics [English] Class 8 chapter 12 - Factorisation - Shaalaa.com

NCERT solutions for Mathematics [English] Class 8 chapter 12 - Factorisation

Shaalaa.com has the CBSE Mathematics Mathematics [English] Class 8 CBSE solutions in a manner that help students grasp basic concepts better and faster. The detailed, step-by-step solutions will help you understand the concepts better and clarify any confusion. NCERT solutions for Mathematics Mathematics [English] Class 8 CBSE 12 (Factorisation) include all questions with answers and detailed explanations. This will clear students' doubts about questions and improve their application skills while preparing for board exams.

Further, we at Shaalaa.com provide such solutions so students can prepare for written exams. NCERT textbook solutions can be a core help for self-study and provide excellent self-help guidance for students.

Concepts covered in Mathematics [English] Class 8 chapter 12 Factorisation are Factors and Common Factors, Factorisation by Taking Out Common Factors, Factorising Algebraic Expressions, Factorisation by Regrouping Terms, Factorisation Using Identities, Factors of the Form (x + a)(x + b), Dividing a Monomial by a Monomial, Dividing a Polynomial by a Monomial, Dividing a Polynomial by a Polynomial, Concept of Find the Error, Factors and Common Factors, Factorisation by Taking Out Common Factors, Factorising Algebraic Expressions, Factorisation by Regrouping Terms, Factorisation Using Identities, Factors of the Form (x + a)(x + b), Dividing a Monomial by a Monomial, Dividing a Polynomial by a Monomial, Dividing a Polynomial by a Polynomial, Concept of Find the Error.

Using NCERT Mathematics [English] Class 8 solutions Factorisation exercise by students is an easy way to prepare for the exams, as they involve solutions arranged chapter-wise and also page-wise. The questions involved in NCERT Solutions are essential questions that can be asked in the final exam. Maximum CBSE Mathematics [English] Class 8 students prefer NCERT Textbook Solutions to score more in exams.

Get the free view of Chapter 12, Factorisation Mathematics [English] Class 8 additional questions for Mathematics Mathematics [English] Class 8 CBSE, and you can use Shaalaa.com to keep it handy for your exam preparation.

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