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31 December, 21:21

Evaluate - x2 + x-1 forx=-1

+2
Answers (2)
  1. 31 December, 22:50
    0
    -3

    Step-by-step explanation:

    -x^2 + x-1

    Let x = - 1

    - (-1) ^2 + (-1) - 1

    - 1 - 1 - 1

    -3
  2. 31 December, 23:31
    0
    0

    Step-by-step explanation:

    the equation after plugging in "x" is

    - (-1) * (2) + (-1) - 1

    then after multiplication it is

    2-1-1

    this becomes 0
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