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13. Factorisation 
EXERCISE 13(A) 
Factorise : 
Question 1. 
15x + 5 
Solution: 
15x + 5 = 5(3x + 1) 
Question 2. 
 
Solution: 
 
Question 3. 
 
Solution: 
 
Question 4. 
 
Solution: 
 
Question 5. 
 
Solution: 
 
Question 6. 
 
Solution: 
 
Page 2


13. Factorisation 
EXERCISE 13(A) 
Factorise : 
Question 1. 
15x + 5 
Solution: 
15x + 5 = 5(3x + 1) 
Question 2. 
 
Solution: 
 
Question 3. 
 
Solution: 
 
Question 4. 
 
Solution: 
 
Question 5. 
 
Solution: 
 
Question 6. 
 
Solution: 
 
Question 7. 
 
Solution: 
 
Question 8. 
 
Solution: 
 
Question 9. 
 
Solution: 
 
Question 10. 
 
Solution: 
 
Question 11. 
 
Solution: 
 
Question 12. 
 
Solution: 
 
 
Page 3


13. Factorisation 
EXERCISE 13(A) 
Factorise : 
Question 1. 
15x + 5 
Solution: 
15x + 5 = 5(3x + 1) 
Question 2. 
 
Solution: 
 
Question 3. 
 
Solution: 
 
Question 4. 
 
Solution: 
 
Question 5. 
 
Solution: 
 
Question 6. 
 
Solution: 
 
Question 7. 
 
Solution: 
 
Question 8. 
 
Solution: 
 
Question 9. 
 
Solution: 
 
Question 10. 
 
Solution: 
 
Question 11. 
 
Solution: 
 
Question 12. 
 
Solution: 
 
 
Question 13. 
 
Solution: 
 
Question 14. 
 
Solution: 
 
Question 15. 
 
Solution: 
 
Question 16. 
 
Solution: 
 
Question 17. 
 
Solution: 
 
Page 4


13. Factorisation 
EXERCISE 13(A) 
Factorise : 
Question 1. 
15x + 5 
Solution: 
15x + 5 = 5(3x + 1) 
Question 2. 
 
Solution: 
 
Question 3. 
 
Solution: 
 
Question 4. 
 
Solution: 
 
Question 5. 
 
Solution: 
 
Question 6. 
 
Solution: 
 
Question 7. 
 
Solution: 
 
Question 8. 
 
Solution: 
 
Question 9. 
 
Solution: 
 
Question 10. 
 
Solution: 
 
Question 11. 
 
Solution: 
 
Question 12. 
 
Solution: 
 
 
Question 13. 
 
Solution: 
 
Question 14. 
 
Solution: 
 
Question 15. 
 
Solution: 
 
Question 16. 
 
Solution: 
 
Question 17. 
 
Solution: 
 
EXERCISE 13(B) 
Question 1. 
Factorise : a
2
 + ax + ab + bx 
Solution: 
 
Question 2. 
Factorise : a
2
 – ab – ca + bc 
Solution: 
 
Question 3. 
Factorise : ab – 2b + a
2
 – 2a 
Solution: 
 
Question 4. 
Factorise : a
3
 – a
2
 + a – 1 
Solution: 
 
Question 5. 
Factorise : 2a – 4b – xa + 2bx 
Solution: 
 
Page 5


13. Factorisation 
EXERCISE 13(A) 
Factorise : 
Question 1. 
15x + 5 
Solution: 
15x + 5 = 5(3x + 1) 
Question 2. 
 
Solution: 
 
Question 3. 
 
Solution: 
 
Question 4. 
 
Solution: 
 
Question 5. 
 
Solution: 
 
Question 6. 
 
Solution: 
 
Question 7. 
 
Solution: 
 
Question 8. 
 
Solution: 
 
Question 9. 
 
Solution: 
 
Question 10. 
 
Solution: 
 
Question 11. 
 
Solution: 
 
Question 12. 
 
Solution: 
 
 
Question 13. 
 
Solution: 
 
Question 14. 
 
Solution: 
 
Question 15. 
 
Solution: 
 
Question 16. 
 
Solution: 
 
Question 17. 
 
Solution: 
 
EXERCISE 13(B) 
Question 1. 
Factorise : a
2
 + ax + ab + bx 
Solution: 
 
Question 2. 
Factorise : a
2
 – ab – ca + bc 
Solution: 
 
Question 3. 
Factorise : ab – 2b + a
2
 – 2a 
Solution: 
 
Question 4. 
Factorise : a
3
 – a
2
 + a – 1 
Solution: 
 
Question 5. 
Factorise : 2a – 4b – xa + 2bx 
Solution: 
 
Question 6. 
 
Solution: 
 
Question 7. 
 
Solution: 
 
Question 8. 
 
Solution: 
 
Question 9. 
 
Solution: 
 
Question 10. 
 
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