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25 September, 14:48

If f (x) = -x^2+3X + 5 and g (x) = X^2 + 2x, which graph shows the graph of (f+g) (x) ?

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  1. 25 September, 14:51
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    Step-by-step explanation:

    + We find the function (f+g) (x) like

    (f+g) (x) = f (x) + g (x) = x^2 + 3x+5 + x^2 + 2x = 2x^2 + 5x + 5

    + So the graph of (f+g) (x) is a parabole with the sommet (-5/4, 15/8).

    Hope that useful for you.
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