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29 July, 20:49

Evaluate - a - 12a 2 for a = - 1

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  1. 29 July, 21:02
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    The answer is - 11

    You put "-1" in place of all the "a"s and get

    - (-1) - 12 (-1) ^2

    - (-1) is just 1, and (-1) ^2 is "1"

    We are then left with 1-12 (1) which is 1-12 which is - 11
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