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Dik : f(x) =2x³+5x²-2x+5 g(x) = 5x³-x³+5x-2 Dit : ( f+g )(x) ??
(f+g)(x) = f(x) +g(x)
f(x) + g(x) = (2x³+5x²-2x+5) + (5x³-x³+5x-2)
= 2x³+5x³-x³+5x²-2x+5x+5-2
= 6x³+5x²+3x+3
(f+g)(x) = f(x) +g(x)
f(x) + g(x) = (2x³+5x²-2x+5) + (5x³-x³+5x-2)
= 2x³+5x³-x³+5x²-2x+5x+5-2
= 6x³+5x²+3x+3