Jika fungsi f(x) = 7x – 3 dan g(x) = x² + 2 maka f(2x) – g (x-1)=

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Jika fungsi f(x) = 7x - 3 dan g(x) = x² + 2 maka f(2x) - g (x-1)=

Jika fungsi f(x) = 7x – 3 dan g(x) = x² + 2 maka f(2x) – g (x-1)=

F(x) = 7x – 3
f(2x) = 7(2x) -3 = 14x – 3
g(x) = x^2 + 2
g(x – 1) = (x – 1)^2 + 2 = x^2 – 2x + 2 + 2 = x^2 – 2x + 4

f(2x) – g(x – 1) =
14x – 3 – (x^2 – 2x + 4)
= 14x – 3 – x^2 + 2x – 4
= -x^2 + 16x -7