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20 September, 01:52

Given two functions f (x) = 2x+1 and g (x) = -13x-3, what is the function rule for (f+g) (x)

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Answers (2)
  1. 20 September, 02:54
    0
    (f+g) (x) = 5/3x-2

    Step-by-step explanation:

    (f+g) (x) = f (x) + g (x)

    f (x) = 2x+1 + g (x) = -1/3 x-3

    add like terms

    2x + (-1/3 x) = 5/3 x

    1 + (-3) = - 2

    so ...

    (f+g) (x) = 5/3 x-2
  2. 20 September, 04:52
    0
    - 11x - 2

    Step-by-step explanation:

    note that (f + g) (x) = f (x) + g (x)

    f (x) + g (x)

    = 2x + 1 - 13x - 3 ← collect like terms

    = - 11x - 2
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