  Give results by inspection: 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. References: The chapter on Special Rules of Multiplication and Division in any algebra. References: Special Rules of Multiplication and Division in the Outline in the front of the book. |
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