mrod55 mrod55
  • 03-10-2016
  • Mathematics
contestada

If f(x) = 4 – x2 and g(x) = 6x, which expression is equivalent to (g – f)(3)?

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kingen
kingen kingen
  • 03-10-2016
F(x) = -x² + 4
g(x) = 6x

(g - f)(3) = 6(3) - (-(3)² + 4)
(g - f)(3) = 18 - (-9 + 4)
(g - f)(3) = 18 - (-5)
(g - f)(3) = 18 + 5
(g - f)(3) = 23
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