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November 02, 2008, 06:42:02 PM
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Partial fractions by colwoot
November 02, 2008, 09:56:35 AM
AS & A-Level
Quadratic Patrial Fractions Question? by Arkious
October 30, 2008, 12:46:55 AM
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logarithms by RudeBoyFace
October 28, 2008, 10:27:19 PM
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Expanding brackets

e.g.

3(x + 4y) = 3x + 12y

Simplify the following expressions…

  1. 2(x + y)
  2. 3(x + 2y)
  3. 2(2x + 2y)
  4. 5(x - 2y)
  5. -2(2x + y)
  6. -3(x - 2y)
  7. -3(-3x + 2)
  8. 5(x - 2y) - 2x
  9. 4(x - y) - 2(x + 2y)
  10. 3(2x + y) + 2(x - 2y)
  11. (x - y) - a(x + 2y)
  12. 2x + 3y - (x - 3y)
  13. 5(x - 2y - z) + 3(x - y + 2z)
  14. 3(x + 8) - 4(2x - 5)
  15. x(x + 1)
  16. x2(x - 7)
  17. x3(x - 7) - x
  18. x(x - 4) + 3(x - 2)
  19. x(2x + 3) - 4(3x - 1)
  20. x(x2 + 1) - x2(x + 1)




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