E45-3eso-2
| __ | 1. | (5x + 1) (5x − 1) | | A. | x2 + 10x + 25 | | __ | 2. | (5x + 1)2 | | B. | x2 − 25 | | __ | 3. | (5x + 5) (5x − 5) | | C. | 25x2 - 1 | | __ | 4. | (5x + 5)2 | | D. | 25x2 - 25 | | __ | 5. | (5x + 5)2 - (5x - 5)2 | | E. | x2 - 10x + 25 | | __ | 6. | (5x - 1)2 | | F. | 25x2 + 10x + 1 | | __ | 7. | (5x - 5)2 | | G. | 25x2 - 50x + 25 | | __ | 8. | (x + 5) (x − 5) | | H. | 25x2 - 10x + 1 | | __ | 9. | (x + 5)2 | | I. | 25x2 + 50x + 25 | | __ | 10. | (x - 5)2 | | J. | 100x |
| __ | 11. | (2k2 + 1) (2k2 - 1) | | A. | 4k4 + 4k2 + 1 | | __ | 12. | (2k2 + 1)2 | | B. | 4k4 - 8k2 + 4 | | __ | 13. | (2k2 + 2) (2k2 - 2) | | C. | 4k4 - 1 | | __ | 14. | (2k2 + 2)2 | | D. | 4k4 - 4k2 + 1 | | __ | 15. | (2k2 - 1)2 | | E. | k4 + 4k2 + 4 | | __ | 16. | (2k2 - 2)2 | | F. | -16k2 | | __ | 17. | (2k2 - 2)2 - (2k2 + 2)2 | | G. | k4 - 4k2 + 4 | | __ | 18. | (k2 + 2)2 | | H. | 4k4 + 8k2 + 4 | | __ | 19. | (k2 - 2)2 | | I. | 4k4 - 4 |
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