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find (f+g)(x) for f(x)=x^2+5x and g(x)=-x^2+3x+4?

answers:
x^2-8x+4
x^2+8x-4
8x-4
8x+4

2007-03-21 03:42:10 · 1 answers · asked by tia b 1 in Science & Mathematics ➔ Mathematics

1 answers

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

(x^2 +5x) + (-x^2 + 3x + 4)

x^2 + 5x - x^2 + 3x + 4

8x + 4

2007-03-21 03:46:54 · answer #1 · answered by Bhajun Singh 4 · 0⤊ 0⤋

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