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25 September, 08:28

If f (x) = 2x^2 + 1 and g (x) = x^2 - 7, find (f+g) (x)

A. 3x^2 + 8

B. 3x^2 - 6

C. x^2 - 6

D. x^2 + 8

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Answers (2)
  1. 25 September, 09:08
    0
    Option B is the answer
  2. 25 September, 10:25
    0
    (f + g) (x) means f (x) + g (x)

    So, you just input the function of f (x) and g (x) altogether, then simplify it.

    (f + g) (x)

    = f (x) + g (x)

    = 2x² + 1 + x² - 7

    = 2x² + x² + 1 - 7

    = 3x² - 6

    The answer is b
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