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Text File  |  1987-08-31  |  1KB  |  38 lines
  1.  
  2.                            Review of Factoring
  3.                            ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀
  4.  
  5. You MUST have all the following information at your fingertips at all times.
  6.  
  7.             You have NO CHANCE of passing Calculus without it.
  8.   
  9.             
  10.                             ax + ay   =   a(x + y)
  11.  
  12.                              2    2
  13.                             a  - b    =   (a - b)(a + b)
  14.  
  15.                   2                  
  16.                  x  + (a + b)x + ab   =   (x + a) (x + b) 
  17.  
  18.                        2          2               2
  19.                       x  + 2ax + a    =    (x + a)
  20.  
  21.                             3    3                  2         2
  22.                            a  - b     =   (a - b) (a  + ab + b )
  23.  
  24. Notice, in this last identity, what happens if "b" is replaced by "-b".
  25.  
  26.  
  27. ┌─────────────────┐
  28. │ Common Mistakes │
  29. └─────────────────┘
  30.  
  31.            2    2             2                  2    2
  32. WRONG     x  - y    =  (x - y)          RIGHT   x  - y    =  (x - y)(x + y)
  33.  
  34.  
  35.  
  36. This is the end of the help file.  Press the ESC key to return to the quiz
  37. question you were doing.
  38.