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17 September, 10:00

Given f (x) = 3x2-6x-1.

What is the value of f (-23) ?

A. 8/3

B. 3

C. 13/3

D. 5

+3
Answers (1)
  1. 17 September, 13:02
    0
    substitute x = - 23 into equation

    Step-by-step explanation:

    f (x) = 3x2-6x-1

    this i interpret as 3 multiplied by 2. So, if you have inputted it wrong, not my fault, so here goes:

    f (x) = 6 - 6 (x) - 1

    substuting x = - 23 ito f (x), we get

    f (-23) = 6 - 6 (-23) - 1

    f (-23) = 6 + 138 - 1

    f (-23) = 6 + 137

    f (-23) = 143
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