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15 July, 08:34

4) Which numerical expression equals - 1? A) - 1 (1 - 1) B) - ( - 1) ( - 1) C) ( - 1) + 1 - 1 ( - 1) D) - ( - 1) - ( - 1) ( - 1)

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  1. 15 July, 09:32
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    Answer:0
  2. 15 July, 10:21
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    A) - 1 (1 - 1) = - 1 · 0 = 0

    B) - (-1) (-1) = - 1

    C) (-1) + 1 - 1 (-1) = 0 - (-1) = 0 + 1 = 1

    D) - (-1) - (-1) (-1) = 1 - 1 = 0

    A and D are equal.
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