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Selina solutions for Concise Mathematics Class 8 ICSE chapter 13 - Factorisation [Latest edition]

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Concise Mathematics Class 8 ICSE - Shaalaa.com
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Chapter 13: Factorisation

Exercise 13 (A)Exercise 13 (B)Exercise 13 (C)Exercise 13 (D)Exercise 13 (E)Exercise 13 (F)
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Exercise 13 (A) [Page 157]

Selina solutions for Concise Mathematics Class 8 ICSE Chapter 13 FactorisationExercise 13 (A) [Page 157]

Exercise 13 (A) | Q 1 | Page 157

Factorise : 15x + 5 

Exercise 13 (A) | Q 2 | Page 157

Factorise : a3 - a2 +a 

Exercise 13 (A) | Q 3 | Page 157

Factorise : 3x2 + 6x3 

Exercise 13 (A) | Q 4 | Page 157

Factorise : 4a2 - 8ab  

Exercise 13 (A) | Q 5 | Page 157

Factorise : 2x3b2 - 4x5b4 

Exercise 13 (A) | Q 6 | Page 157

Factorise : 15x4y3 - 20x3y

Exercise 13 (A) | Q 7 | Page 157

Factorise : a3b - a2b2 - b3  

Exercise 13 (A) | Q 8 | Page 157

Factorise : 6x2y + 9xy2 + 4y3 

Exercise 13 (A) | Q 9 | Page 157

Factorise : 17a6b8 - 34a4b6 + 51a2b4 

Exercise 13 (A) | Q 10 | Page 157

Factorise : 3x5y - 27x4y2 + 12x3y3  

Exercise 13 (A) | Q 11 | Page 157

Factorise : x2(a-b)-y2 (a-b)+z2(a-b)  

Exercise 13 (A) | Q 12 | Page 157

Factorise : (x + y)(a + b) + (x - y)(a + b) 

Exercise 13 (A) | Q 13 | Page 157

Factorise : 2b (2a + b) - 3c (2a + b) 

Exercise 13 (A) | Q 14 | Page 157

Factorise : 12abc - 6a2b2c2 + 3a3b3c3  

Exercise 13 (A) | Q 15 | Page 157

Factorise : 4x(3x - 2y) - 2y(3x - 2y) 

Exercise 13 (A) | Q 16 | Page 157

Factorise : (a+ 2b) (3a + b) - (a+ b) (a+ 2b) +(a+ 2b)

Exercise 13 (A) | Q 17 | Page 157

Factorise : 6xy(a2 + b2) + 8yz(a2 + b2) -10xz(a2 + b2

Exercise 13 (B) [Page 158]

Selina solutions for Concise Mathematics Class 8 ICSE Chapter 13 FactorisationExercise 13 (B) [Page 158]

Exercise 13 (B) | Q 1 | Page 158

Factorise : a2 + ax + ab + bx

Exercise 13 (B) | Q 2 | Page 158

Factorise : a2 - ab - ca + bc 

Exercise 13 (B) | Q 3 | Page 158

Factorise : ab - 2b + a2 - 2a 

Exercise 13 (B) | Q 4 | Page 158

Factorise : a3 -a2 +a -1 

Exercise 13 (B) | Q 5 | Page 158

Factorise : 2a - 4b - xa + 2bx 

Exercise 13 (B) | Q 6 | Page 158

Factorise :  xy - ay - ax + a2 + bx - ab 

Exercise 13 (B) | Q 7 | Page 158

Factorise : 3x5 - 6x4 - 2x3 + 4x2 + x - 2 

Exercise 13 (B) | Q 8 | Page 158

Factorise : - x2y - x + 3xy + 3

Exercise 13 (B) | Q 9 | Page 158

Factorise : 6a2 - 3a2b - bc2 + 2c2  

Exercise 13 (B) | Q 10 | Page 158

Factorise : 3a2b - 12a2 - 9b + 36

Exercise 13 (B) | Q 11 | Page 158

Factorise : x2 - (a - 3)x - 3a

Exercise 13 (B) | Q 12 | Page 158

Factorise : x2 - (b - 2)x - 2b 

Exercise 13 (B) | Q 13 | Page 158

Factorise : a(b - c) - d(c - b) 

Exercise 13 (B) | Q 14 | Page 158

Factorise : ab2 - (a - c) b - c 

Exercise 13 (B) | Q 15 | Page 158

Factorise : (a2 - b2) c + (b2 - c2)a 

Exercise 13 (B) | Q 16 | Page 158

Factorise : a3 - a2 - ab + a + b - 1

Exercise 13 (B) | Q 17 | Page 158

Factorise : ab(c2 + d2) - a2cd - b2cd  

Exercise 13 (B) | Q 18 | Page 158

Factorise : 2ab2 - aby + 2cby - cy2 

Exercise 13 (B) | Q 19 | Page 158

Factorise : ax + 2bx + 3cx - 3a - 6b - 9c 

Exercise 13 (B) | Q 20 | Page 158

Factorise : 2ab2c - 2a + 3b3c - 3b - 4b2c2 + 4c 

Exercise 13 (C) [Page 159]

Selina solutions for Concise Mathematics Class 8 ICSE Chapter 13 FactorisationExercise 13 (C) [Page 159]

Exercise 13 (C) | Q 1 | Page 159

Factorise: 16 - 9x2

Exercise 13 (C) | Q 2 | Page 159

Factorise: 1 - 100a2 

Exercise 13 (C) | Q 3 | Page 159

Factorise: 4x2 - 81y

Exercise 13 (C) | Q 4 | Page 159

Factorise: `4/25 - 25b^2`

Exercise 13 (C) | Q 5 | Page 159

Factorise: (a+ 2b)2 - a2  

Exercise 13 (C) | Q 6 | Page 159

Factorise: (5a - 3b)2 - 16b2  

Exercise 13 (C) | Q 7 | Page 159

Factorise: a4 - (a2 - 3b2)2 

Exercise 13 (C) | Q 8 | Page 159

Factorise:  (5a - 2b)2 - (2a - b)2 

Exercise 13 (C) | Q 9 | Page 159

Factorise:  1 - 25 (a+ b)2 

Exercise 13 (C) | Q 10 | Page 159

Factorise: 4(2a + b)2 - (a - b)2  

Exercise 13 (C) | Q 11 | Page 159

Factorise: 25(2x + y)2 - 16(x - y)2 

Exercise 13 (C) | Q 12 | Page 159

Factorise: 49(x - y)2 -9(2x + y)2  

Exercise 13 (C) | Q 13 | Page 159

Factorise: `(6 2/3)^2 - (2 1/3)^2`

Exercise 13 (C) | Q 14 | Page 159

Factorise: `(7 3/10)^2 - (2 1/10)^2`

Exercise 13 (C) | Q 15 | Page 159

Factorise: (0·7)2 - (0·3)2 

Exercise 13 (C) | Q 16 | Page 159

Factorise: (4.5)2 – (1.5)

Exercise 13 (C) | Q 17 | Page 159

Factorise: 75(x + y)2 - 48(x - y)2 

Exercise 13 (C) | Q 18 | Page 159

Factorise:  a2 + 4a + 4 - b2 

Exercise 13 (C) | Q 19 | Page 159

Factorise:  a2 - b2 - 2b - 1 

Exercise 13 (C) | Q 20 | Page 159

factorise:  x2 + 6x + 9 - 4y

Exercise 13 (D) [Page 161]

Selina solutions for Concise Mathematics Class 8 ICSE Chapter 13 FactorisationExercise 13 (D) [Page 161]

Exercise 13 (D) | Q 1 | Page 161

factorise: x2 + 6x + 8 

Exercise 13 (D) | Q 2 | Page 161

factorise: x2 + 4x + 3 

Exercise 13 (D) | Q 3 | Page 161

factorise: a2 +Sa+ 6

Exercise 13 (D) | Q 4 | Page 161

factorise: a2 - 5a+ 6 

Exercise 13 (D) | Q 5 | Page 161

factorise: a2 +5a - 6 

Exercise 13 (D) | Q 6 | Page 161

factorise: x2 + 5xy + 4y2 

Exercise 13 (D) | Q 7 | Page 161

factorise: a2 - 3a- 40 

Exercise 13 (D) | Q 8 | Page 161

factorise: x2 - x - 72

Exercise 13 (D) | Q 9 | Page 161

factorise:  x2 - 10xy + 24y2 

Exercise 13 (D) | Q 10 | Page 161

factorise: 2a2 + 7a + 6 

Exercise 13 (D) | Q 11 | Page 161

factorise: 3a2 - 5a + 2

Exercise 13 (D) | Q 12 | Page 161

factorise: 7b2 - 5b+ 1 

Exercise 13 (D) | Q 13 | Page 161

factorise: 2a2 - 17ab + 26b2

Exercise 13 (D) | Q 14 | Page 161

factorise: 2x2 + xy - 6y2

Exercise 13 (D) | Q 15 | Page 161

factorise: 4c2 + 3c - 10 

Exercise 13 (D) | Q 16 | Page 161

factorise: 14x2 + x - 3 

Exercise 13 (D) | Q 17 | Page 161

factorise: 6 + 7b - 3b2 

Exercise 13 (D) | Q 18 | Page 161

factorise: 5 + 7x - 6x2

Exercise 13 (D) | Q 19 | Page 161

factorise: 4 + y - 14y2 

Exercise 13 (D) | Q 20 | Page 161

factorise: 5 + 3a - 14a2

Exercise 13 (D) | Q 21 | Page 161

factorise: (2a + b)2 + 5(2a + b) + 6 

Exercise 13 (D) | Q 22 | Page 161

factorise: 1 - (2x + 3y) - 6(2x + 3y)2  

Exercise 13 (D) | Q 23 | Page 161

factorise: (x - 2y)2 - 12(x - 2y) + 32 

Exercise 13 (D) | Q 24 | Page 161

factorise: 8 + 6(a + b) - 5(a + b)2 

Exercise 13 (D) | Q 25 | Page 161

Factorise : 2(x + 2y)2 - 5(x + 2y) + 2

Exercise 13 (E) [Page 162]

Selina solutions for Concise Mathematics Class 8 ICSE Chapter 13 FactorisationExercise 13 (E) [Page 162]

Exercise 13 (E) | Q 1.1 | Page 162

In the case find whether the trinomial is a perfect square or not:

x2 + 14x + 49 

Exercise 13 (E) | Q 1.2 | Page 162

In the case find whether the trinomial is a perfect square or not:

a2 - 10a + 25

Exercise 13 (E) | Q 1.3 | Page 162

In the case find whether the trinomial is a perfect square or not:

4x2 + 4x + 1

Exercise 13 (E) | Q 1.4 | Page 162

In the case find whether the trinomial is a perfect square or not:

9b2 + 12b + 16 

Exercise 13 (E) | Q 1.5 | Page 162

In the case find whether the trinomial is a perfect square or not:

16x2 - 16xy + y2

Exercise 13 (E) | Q 1.6 | Page 162

In the case find whether the trinomial is a perfect square or not:

x2 - 4x + 16 

Exercise 13 (E) | Q 2 | Page 162

Factorise completely: 2 - 8x

Exercise 13 (E) | Q 3 | Page 162

Factorise completely: 8x2y - 18y3 

Exercise 13 (E) | Q 4 | Page 162

Factorise completely: ax2 - ay2  

Exercise 13 (E) | Q 5 | Page 162

Factorise completely: 25x3 - x 

Exercise 13 (E) | Q 6 | Page 162

Factorise completely:  a4 - b4 

Exercise 13 (E) | Q 7 | Page 162

Factorise completely: 16x4 - 81y4  

Exercise 13 (E) | Q 8 | Page 162

Factorise completely: 625 - x4 

Exercise 13 (E) | Q 9 | Page 162

Factorise completely: x2 - y2 - 3x - 3y 

Exercise 13 (E) | Q 10 | Page 162

Factorise completely: x2 - y2 - 2x + 2y 

Exercise 13 (E) | Q 11 | Page 162

Factorise completely: 3x2 + 15x - 72 

Exercise 13 (E) | Q 12 | Page 162

Factorise completely: 2a2 - 8a - 64 

Exercise 13 (E) | Q 13 | Page 162

Factorise completely: 5b2 + 45b + 90 

Exercise 13 (E) | Q 14 | Page 162

Factorise completely: 3x2y + 11xy + 6y 

Exercise 13 (E) | Q 15 | Page 162

Factorise completely: 5ap2 + 11ap + 2a 

Exercise 13 (E) | Q 16 | Page 162

Factorise completely: a2 + 2ab + b2 - c2  

Exercise 13 (E) | Q 17 | Page 162

Factorise completely: x2 + 6xy + 9y2 + x + 3y 

Exercise 13 (E) | Q 18 | Page 162

Factorise completely: 4a2 -12ab + 9b2 + 4a- 6b  

Exercise 13 (E) | Q 19 | Page 162

Factorise completely:   2a2b2 - 98b4 

Exercise 13 (E) | Q 20 | Page 162

Factorise completely: a2 -16b2 - 2a - 8b 

Exercise 13 (F) [Page 163]

Selina solutions for Concise Mathematics Class 8 ICSE Chapter 13 FactorisationExercise 13 (F) [Page 163]

Exercise 13 (F) | Q 1.1 | Page 163

factorise :  6x3 - 8x2

Exercise 13 (F) | Q 1.2 | Page 163

factorise : 35a3b2c + 42ab2c2 

Exercise 13 (F) | Q 1.3 | Page 163

factorise : 36x2y2 - 30x3y3 + 48x3y2

Exercise 13 (F) | Q 1.4 | Page 163

factorise :  8(2a + 3b)3 - 12(2a + 3b)2  

Exercise 13 (F) | Q 1.5 | Page 163

factorise :   9a (x-2y)4 - 12a (x - 2y)3 

Exercise 13 (F) | Q 2.1 | Page 163

factorise : a2 - ab - 3a + 3b 

Exercise 13 (F) | Q 2.2 | Page 163

factorise : x2y - xy2 + 5x - 5y 

Exercise 13 (F) | Q 2.3 | Page 163

factorise : a2 - ab (1 - b) - b3

Exercise 13 (F) | Q 2.4 | Page 163

factorise : xy2 + (x - 1) y - 1 

Exercise 13 (F) | Q 2.5 | Page 163

factorise : (ac + by)2 + (bx - ay)2

Exercise 13 (F) | Q 2.6 | Page 163

factorise : ab(x2 + y2) - xy (a2 + b2

Exercise 13 (F) | Q 2.7 | Page 163

factorise : m - 1 - (m-1)2 + am - a 

Exercise 13 (F) | Q 3.1 | Page 163

factorise : a2 - (b - c)2 

Exercise 13 (F) | Q 3.2 | Page 163

factorise : 25(2x - y)2 - 16(x - 2y)2 

Exercise 13 (F) | Q 3.3 | Page 163

factorise : 16(5x + 4)2 -9(3x - 2)2 

Exercise 13 (F) | Q 3.4 | Page 163

factorise: 9x2 - `1/16`

Exercise 13 (F) | Q 3.5 | Page 163

factorise:  25(x - 2y)2 - 4 

Exercise 13 (F) | Q 4.1 | Page 163

factorise:  a2 - 23a + 42

Exercise 13 (F) | Q 4.2 | Page 163

factorise: a2 - 23a -108 

Exercise 13 (F) | Q 4.3 | Page 163

factorise: 1 - 18x - 63x2 

Exercise 13 (F) | Q 4.4 | Page 163

factorise: 5x2 - 4xy - 12y2 

Exercise 13 (F) | Q 4.5 | Page 163

factorise:  x(3x + 14) + 8 

Exercise 13 (F) | Q 4.6 | Page 163

factorise: 5 - 4x(1 + 3x)

Exercise 13 (F) | Q 4.7 | Page 163

factorise: x2y2 - 3xy - 40 

Exercise 13 (F) | Q 4.8 | Page 163

factorise: (3x - 2y)2 - 5(3x - 2y) - 24

Exercise 13 (F) | Q 4.9 | Page 163

factorise: 12(a + b)2 - (a+ b) - 35 

Exercise 13 (F) | Q 5.1 | Page 163

factorise: 15(5x - 4)2 - 10(5x - 4) 

Exercise 13 (F) | Q 5.2 | Page 163

factorise: 3a2x - bx + 3a2 - b  

Exercise 13 (F) | Q 5.3 | Page 163

factorise: b(c - d)2 + a(d - c) + 3(c - d)

Exercise 13 (F) | Q 5.4 | Page 163

factorise: ax2 + b2y - ab2 - x2

Exercise 13 (F) | Q 5.5 | Page 163

factorise: 1 - 3x - 3y - 4(x + y)2 

Exercise 13 (F) | Q 6.1 | Page 163

factorise:  2a3 - 50a 

Exercise 13 (F) | Q 6.2 | Page 163

factorise:  54a2b2 - 6 

Exercise 13 (F) | Q 6.3 | Page 163

factorise:  64a2b - 144b3 

Exercise 13 (F) | Q 6.4 | Page 163

factorise:  (2x - y)3 - (2x - Y) 

Exercise 13 (F) | Q 6.5 | Page 163

factorise:  x2 - 2xy + y2 - z2 

Exercise 13 (F) | Q 6.6 | Page 163

factorise:  x2 - y2 - 2yz - z2 

Exercise 13 (F) | Q 6.7 | Page 163

factorise:  7a5 - 567a  

Exercise 13 (F) | Q 6.8 | Page 163

factorise:  `5"x"^2 - (20"x"^4)/9`

Exercise 13 (F) | Q 7.1 | Page 163

Factorise xy2 - xz2, Hence, find the value of : 

9 x 82 - 9 x 22 

Exercise 13 (F) | Q 7.2 | Page 163

Factorise xy2 - xz2, Hence, find the value of : 

40 x 5.52 - 40 x 4.52  

Exercise 13 (F) | Q 8.1 | Page 163

Factorise: (a - 3b)2 - 36 b2  

Exercise 13 (F) | Q 8.2 | Page 163

Factorise: 25(a - 5b)2 - 4(a - 3b)2 

Exercise 13 (F) | Q 8.3 | Page 163

Factorise: a2 - 0·36 b2  

Exercise 13 (F) | Q 8.4 | Page 163

Factorise: a4 - 625 

Exercise 13 (F) | Q 8.5 | Page 163

Factorise: x4 - 5x2 - 36

Exercise 13 (F) | Q 8.6 | Page 163

Factorise: 15(2x - y)2 - 16(2x - y) - 15  

Exercise 13 (F) | Q 9 | Page 163

Factorise a2b - b3. Using this result, find the value of 1012 × 100 - 1003.

Exercise 13 (F) | Q 10 | Page 163

Evaluate (using factors) : 3012 x 300 - 3003

Chapter 13: Factorisation

Exercise 13 (A)Exercise 13 (B)Exercise 13 (C)Exercise 13 (D)Exercise 13 (E)Exercise 13 (F)
Concise Mathematics Class 8 ICSE - Shaalaa.com

Selina solutions for Concise Mathematics Class 8 ICSE chapter 13 - Factorisation

Selina solutions for Concise Mathematics Class 8 ICSE chapter 13 (Factorisation) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the CISCE Concise Mathematics Class 8 ICSE solutions in a manner that help students grasp basic concepts better and faster.

Further, we at Shaalaa.com provide such solutions so that students can prepare for written exams. Selina textbook solutions can be a core help for self-study and acts as a perfect self-help guidance for students.

Concepts covered in Concise Mathematics Class 8 ICSE chapter 13 Factorisation are Factorisation by Taking Out Common Factors, Factorisation by Difference of Two Squares, Factorisation of Trinomials, Factorising a Perfect Square Trinomial, Factorising Completely, Factorisation by Grouping, Factorisation by Taking Out Common Factors.

Using Selina Class 8 solutions Factorisation exercise by students are an easy way to prepare for the exams, as they involve solutions arranged chapter-wise also page wise. The questions involved in Selina Solutions are important questions that can be asked in the final exam. Maximum students of CISCE Class 8 prefer Selina Textbook Solutions to score more in exam.

Get the free view of chapter 13 Factorisation Class 8 extra questions for Concise Mathematics Class 8 ICSE and can use Shaalaa.com to keep it handy for your exam preparation

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