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30 November, 14:30

What is the value of - 2x^2-4x-11 if x=-3

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Answers (2)
  1. 30 November, 15:30
    0
    Replace every x with - 3.

    -2 (-3) ^2 - 4 (-3) - 11

    -2 (9) + 12 - 11

    -18 + 1

    -17
  2. 30 November, 16:27
    0
    10

    Step-by-step explanation:

    -2x^2 = - - 3^2

    = 9

    9-4x = 9 - - 12

    = 21

    21-11 = 10
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