11.11. CHAPTER 11 REVIEW PROBLEMS

Factor completely.

  1. x2 − 2x − 15 (x − 5)(x + 3)

  2. 2a2 + 3a − 2 (2a − 1)(a + 2)

  3. x6 − y4 (x3y2)(x3 + y2)

  4. 2ax2 + 8ax + 8a 2a(x + 2)2

  5. 2x2 + 3x − 2 (2x − 1)(x + 2)

  6. a2 + ab − 6b2 (a + 3b)(a − 2b)

  7. (2xy)(4x2 + 2xy/3 + y2/9)

  8. (x/y)(x − 1)

  9. 2ax2y2 − 18a 2a(xy − 3)(xy + 3)

  10. xy − 2y + 5x − 10 (y + 5)(x − 2)

  11. 3a2 − 2a − 8 (3a + 4)(a − 2)

  12. xbx − y + by (xy)(1 − b)

  13. (2/3)(a + 2b)(a/2 − 2b/3)

  14. (y + 2)2 − z2 (y + 2 −z)(y + 2 + z)

  15. 2x2 − 20ax + 50a2 2(x − 5a)2

  16. x2 − 7x + 12 (x − 3)(x − 4)

  17. 4a2 − (3a − 1)2 (5a − 1)(1 −a)

  18. 1 − 16x2 (1 + 4x)(1 − 4x)

  19. a2 − 2a − 8 (a − 4)(a + 2)

  20. 9x4 − x2 x2(3x + 1)(3x − 1)

  21. x2 − 21x + 110 (x − 10)(x − 11)

  22. 27a3 − 8w3 (3a − 2w)(9a2 + 6aw + 4w2)

  23. 3x2 − 6x − 45 3(x + 3)(x − 5)

  24. 16x2 − 16xy + 4y2 4(2xy)2

  25. 64m3 − 27n3 (4m − 3n)(16m2 + 12mn + 9n2)

  26. 6ab + 2ay + 3bx + xy (3b + y)(2a + x)

  27. 15a2 − 11a − 12 (3a − 4)(5a + 3)

  28. 2y4 − 18 2(y2 − 3)(y2 + 3)

  29. axbx + ayby (ab)(x + y)

Solve for x.

Perform the indicated operations and simplify.

  1. The reduction in power in a resistance R caused ...

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