Question

9. x² - y2 – 3x – 3y
10. x² - y² – 2x + 2y . 3x² + 15x - 72
12. 2a2 - 8a - 64 13. 5b2 + 45b + 90
14. 3x2y + 11xy + 6y
15. 5ap2 + 11ap + 2a
16. a2 + 2ab + b2 - 2
17. x2 + xy +9y2 + x + 3y
18. 4a2 - 12ab + 9b2 + 4a - 6b
19. 2a2b2 - 9864
20. a2 - 16b2 - 2a - 8b
Factorise completely.​

Answer 1

Answer:

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