完全平方公式因式分解20道题 1. x² + 24x + 144 = (x + 12)² 2. x² + 10x + 25 = (x + 5)² 3. x² - 9 = (x + 3)(x - 3) 4. x² - 2x - 15 = (x - 5)(x + 3) 5. x² - 49 = (x + 7)(x - 7) 6. x² + 2x - 64 = (x + 8)(x - 8) 7. x² + 8x + 16 = (x + 4)² 8. x² + 14x + 49 = (x + 7)² 9. x² - 8x + 15 = (x - 5)(x + 3) 10. x² + 6x + 9 = (x + 3)² 11. x² - 6x + 9 = (x - 3)(x + 3) 12. x² - 16x + 64 = (x - 8)(x + 8) 13. x² + 18x + 81 = (x + 9)² 14. x² - 7x + 12 = (x - 6)(x + 2) 15. x² + 4x + 4 = (x + 2)² 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. x² + 10x + 16 = (x + 4)(x + 4) x² - 18x + 81 = (x - 9)(x + 9) x² + 24x + 36 = (x + 6)² x² + 4x - 32 = (x + 8)(x - 4) x² - 10x + 25 = (x - 5)(x + 5) x² - 25 = (x + 5)(x - 5) x² + 8x + 16 = (x + 4)(x + 4) x² - 2x + 1 = (x - 1)(x + 1) x² - 4x + 4 = (x - 2)(x + 2) x² + 12x + 36 = (x + 6)² 26. x² - 16 = (x + 4)(x - 4) 27. x² - 8x + 16 = (x - 4)(x + 4) 28. x² + 16x + 64 = (x + 8)² 29. x² - 20x + 100 = (x - 10)(x + 10) 30. x² + 6x + 9 = (x + 3)(x + 3) 本文来源：https://www.wddqw.com/doc/ce72077c677d27284b73f242336c1eb91b37331c.html