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10 November, 05:27

W^2-4w + ? what lake the expression a perfect square

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  1. 10 November, 08:55
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    (w-2) (w-2) - 2w*w=-2w^2 w*-2=-2w = - 4w w^2-4w+4
  2. 10 November, 09:15
    0
    To complete the squre you take the B value (Ax^2+Bx+c) divide by two then square it so it would be 4
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