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11 March, 22:07

Find f (4).

f (x) = x2 + 2x - 3

+4
Answers (2)
  1. 11 March, 22:17
    0
    21.

    Step-by-step explanation:

    f (4) is the value of f (x) when x = 4 so the answer is:

    4^2 + 2*4 - 3

    = 16 + 8 - 3

    = 21.
  2. 11 March, 22:22
    0
    f (x) = 21

    Step-by-step explanation:

    So the equation sad that the f (x) is equal to 4. Means the x is equal to 4.

    If you plug in 4:

    x^2+2x-3

    4^ (2) + 2 (4) - 3

    16+8-3

    =21

    The answer is 21.
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