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Verified answer
Saya coba bantu yah !f (x) = 2x² - 3x + 1
g (x) = x - 1
fog (x) = 0
f [g (x)] = 0
f (x - 1) = 0
2 (x - 1)² - 3 (x - 1) + 1 = 0
2 (x² - 2x + 1) - 3x + 3 + 1 = 0
2x² - 4x + 2 - 3x + 3 + 1 = 0
2x² - 4x - 3x + 2 + 3 + 1 = 0
2x² - 7x + 6 = 0
(2x - 3) (x - 2) = 0
2x - 3 = 0
2x = 3
x = 3/2
Atau dan
x - 2 = 0
x = 2
Maka, nilai x yang memenuhi adalah 2 dan 3/2
Jawabannya adalah C. 2 dan 3/2
Semoga bisa membantu yah !
Verified answer
Matematika X SMA→→ Fungsi ←←
Pembahasan :
Fog(x) = 0
F(g(x)) = 0
2(x - 1)² - 3(x - 1) + 1 = 0
2(x² - 2x + 1) - 3x + 4 = 0
2x² - 7x + 6 = 0
(2x - 3)(x - 2) = 0
x = 3/2
x = 2
Opsi C.