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30 December, 10:12

Find f (-2) if

f (x) = x4 + 2x² - 1

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Answers (1)
  1. 30 December, 11:16
    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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