1. 2(2x - 5)2. (x + 11)(x - 11)3. (x + 1)(x - 1)4. (x + 8)(x + 8)5. (5x - 4)(x - 2)6. (x - 8)(x + 5)7. Prime (not factorable)8. (x² + 7)(x² + 7)9. (x + 13)(x - 13)10. 3(6x + 7)11. 4(x² - 3)12. (x + 2)(x + 3)13. Prime (not factorable)14. (x - 2)(x - 8)15. (x + 9)(x - 9)