Answer Key 7.2

  1. 8r^2(5r-1)-5(5r-1)
    (5r-1)(8r^2-5)
  2. 5x^2(7x-2)-8(7x-2)
    (7x-2)(5x^2-8)
  3. n^2(3n-2)-3(3n-2)
    (3n-2)(n^2-3)
  4. 2v^2(7r+5)-1(7r+5)
    (7v+5)(2v^2-1)
  5. 3b^2(5b+7)-7(5b+7)
    (5b+7)(3b^2-7)
  6. 6x^2(x-8)+5(x-8)
    (x-8)(6x^2+5)
  7. 7x^2(5x-4)-4(5x-4)
    (5x-4)(7x^2-4)
  8. 7n^2(n+3)-5(n+3)
    (n+3)(7n^2-5)
  9. 7x(y-7)+5(y-7)
    (y-7)(7x+5)
  10. 7r^2(6r-7)+3(6r-7)
    (6r-7)(7r^2+3)
  11. 8x(2y-7)+1(2y-7)
    (2y-7)(8x+1)
  12. m(3n-8)+5(3n-8)
    (3n-8)(m+5)
  13. 2x(y-4x)+7y^2(y-4x)
    (y-4x)(2x+7y^2)
  14. m(5n+2)-5(5n+2)
    (5n+2)(m-5)
  15. 5x(8y+7)-y(8y+7)
    (8y+7)(5x-y)
  16. 8x(y+7)-1(y+7)
    (y+7)(8x-1)
  17. 12y+10xy+30+25x
    2y(6+5x)+5(6+5x)
    (6+5x)(2y+5)
  18. 24xy-20x+25y^2-30y^3
    4x(6y-5)-5y^2(6y-5)
    (6y-5)(4x-5y^2)
  19. -6u^2+3uv+14u-7v
    -3u(2u-v)+7(2u-v)
    (2u-v)(-3u+7)
  20. 56ab-16b-49a+14
    8b(7a-2)-7(7a-2)
    (7a-2)(8b-7)

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Intermediate Algebra by Terrance Berg is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License, except where otherwise noted.

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