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Diketahui f(x)=x²−3x+5, g(x)=x³−2x²−4, h(x)=2x+1 Tentukan .f(x)+g(x)!

Rani Maharani

Soal

Diketahui f(x)=x²−3x+5, g(x)=x³−2x²−4, h(x)=2x+1

Tentukan .f(x)+g(x)!

Pembahasan

f(x) + g(x) = (x² - 3x + 5) + (x³ - 2x² - 4)

            = x³ - 2x² + x² - 3x + 5 - 4

            = x³ - x² - 3x + 1

Sehingga f(x) + g(x) = x³ - x² - 3x + 1.

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