21-11-2016
Mathematics

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how to solve f(x)=x^2+1, g(x)= 5x how to solve

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brandoncarroll13 brandoncarroll13

21-11-2016

(f + g)(x) = f(x) + g(x) = [3x + 2] + [4 – 5x] = 3x – 5x + 2 + 4 = –2x + 6(f – g)(x) = f(x) – g(x) = [3x + 2] – [4 – 5x] = 3x + 5x + 2 – 4 = 8x – 2(f×g)(x) = [f(x)][g(x)] = (3x + 2)(4 – 5x) = 12x + 8 – 15x2 – 10x= –15x2 + 2x + 8

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