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22 August, 13:22

Find f (-2) if

f (x) = x4 + 2x² - 1

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Answers (1)
  1. 22 August, 13:28
    0
    23.

    Step-by-step explanation:

    Replace the x by - 2 and simplify:

    f (-2) = (-2) ^4 + 2 (-2) ^2 - 1

    = 16 + 2*4 - 1

    = 16 + 8 - 1

    = 23.
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