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8 September, 17:19

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

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  1. 8 September, 17:30
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    F (x) = - x2 (squared)

    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

    Note: All of the number 2 means squared
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