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3 March, 19:09

If f (x) = 2x2 - 10, find f (5).

90

10

7.5

40

+5
Answers (2)
  1. 3 March, 19:30
    0
    If you mean 2x^2 (squared) - 10, then all you have to do is replace x with 5.

    f (5) = 2 (5) ^2 - 10

    = 2 (25) - 10

    = 50 - 10

    f (5) = 40
  2. 3 March, 19:34
    0
    F (x) = 2x² - 10

    f (5) = 2 (5) ²-10

    f (5) = 40
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