Mathematics
Grade10
Easy

Question

Rewrite 3(x - 2)2 + 7=0 in standard form.

  1. x2 - 4x + 7    
  2. 3x2 - 12x + 12    
  3. 3x2 - 12x + 19    
  4. x2 - 4x + 7    

The correct answer is: 3x2 - 12x + 19


    3(x - 2)2 + 7 = 3(x2 + 4 - 4x) + 7
    = 3x2 + 12 - 12x + 7
    = 3x2 - 12x + 19

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