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7 January, 03:44

Find the product mentally. [ (x + 1) (x - 1) ]2

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Answers (2)
  1. 7 January, 06:28
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    (x+1) (x-1) (2) = 2x^2-2
  2. 7 January, 06:40
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    [ (x+1) (x-1) ]2 = (x*x + - x + x + - 1) 2 = (x^2 - 1) 2. This should be the simplest form.
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