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21 December, 18:53

Give the function f (x) = 2x^2+4x-7 find f (-4) ?

A - 55

B - 7

C 9

D 25

+5
Answers (1)
  1. 21 December, 20:16
    0
    C

    Step-by-step explanation:

    To evaluate f? ( - 4) substitute x = - 4 into f (x), that is

    f ( - 4) = 2 ( - 4) ² + 4 ( - 4) - 7 = (2 * 16) - 16 - 7 = 32 - 23 = 9 → C
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