Question

= (2x-3) (2x-7).
EXERCISE 3A
Factorise:
1.9x² + 12xy
3. 27a® b3 - 45a4b2
5. 2x(p?+22) + 4y (p?+93)
7. 4(a+b) – 6(a + b)2
9. x(x+y)– 3x?y(x+y)
11. r?+ xy - 2xz – 2yz
13. 8-4a - 2a + a4
15. px - 59+pq-5x
17. (3a - 1)? - 6a +2
19. a'+a-3a²-3
2. 18x²y – 24xyz
4. 2a(x + y) - 36(x + y)
6. x(a – 5) + y(5-a)
8. 8(3a - 2b)2 - 10(3a - 2b)
10. xº + 2x² + 5x + 10
12. a'b-a²b+ 5ab - 56
14. x −2xy + 3xy-6
16. x² + y - xy - x
18. (2x - 3)2 - 8x + 12
20. Bax - 6ay - 8by + 4bx​

Answer 1

Answer:

1 . 9x² + 12 xy

= (3x) (3x+4y)