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12 April, 07:04

F (x) = 5x^2-2x and g (x) = x^2-x+5 (f+g) (x) =

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  1. 12 April, 09:51
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    F (x) = 5x^2-2x, g (x) = x^2-x+5

    (f+g) (x) should equal f (x) + g (x), so

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

    Now drop the () and line up like terms side by side, then add:

    5x^2+x^2 + - 2x-x + 5 = 6x^2-3x+5
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