corbor27 corbor27
  • 13-04-2018
  • Mathematics
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what is the value of x2-4x+4

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altavistard
altavistard altavistard
  • 13-04-2018
Unclear.  What do you mean by "value of?"  Perhaps you meant, "What are the factors of x^2-4x+4?"  Look at the final 4.  Possible factors of 4 are (-1)(-4) and (-2)(-2).  Note that -2-2= -4, which matches the "-4" in x^2-4x+4.

Thus, try the following factors:  (x-2)(x-2).  When mult. together, 
x^2-4x+4 results, so these factors are the correct ones.
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