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24 October, 04:51

If f (x) = 8 - 10x and g (x) = 5x + 4, what is the value of (fg) (-2) ?

-196

-168

22

78

+1
Answers (1)
  1. 24 October, 05:58
    0
    (8 - 10x) (5x + 4) = 40x + 32 - 50x^2 - 40x

    = - 50x^2 + 32

    (fg) (-2) = - 200 + 32 = - 168
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