Question

Jika 2x^3-5x^2-kx+18 dibagi x-1 mempunyai sisa 5, nilai k adalah

Answer 1

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f(x) =2x³ - 5x² - kx + 18
x-1= 0
x = 1
f(1) = 5
2- 5- k + 18 = 5
15 - k = 5
k = 10