Jawaban:
(fog)(x) = (x-2)² + 2(x-2) -5
3. = x² -4x +4 +2x -4-5
= x²-2x-8
(x-4)(x+2)
x=4 V x= -2 (C)
● Materi : Fungsi Komposisi
● Kode Kategorisasi: 10.2.3
Penjelasan dengan langkah-langkah:
f(x) = x^2 + 2x - 5. g(x) = x - 2. (fog)(x) = 3.
f(g(x)) = (fog)(x)
(x - 2)^2 + 2(x - 2) - 5 = 3
x^2 - 4x + 4 + 2x - 4 - 5 = 3
x^2- 2x - 5 - 3 = 0
x^2- 2x - 8 = 0
(x + 2)(x - 4) = 0
x = -2
x = 4
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Jawaban:
(fog)(x) = (x-2)² + 2(x-2) -5
3. = x² -4x +4 +2x -4-5
= x²-2x-8
(x-4)(x+2)
x=4 V x= -2 (C)
● Materi : Fungsi Komposisi
● Kode Kategorisasi: 10.2.3
Jawaban:
C. -2 atau 4
Penjelasan dengan langkah-langkah:
f(x) = x^2 + 2x - 5. g(x) = x - 2. (fog)(x) = 3.
f(g(x)) = (fog)(x)
(x - 2)^2 + 2(x - 2) - 5 = 3
x^2 - 4x + 4 + 2x - 4 - 5 = 3
x^2- 2x - 5 - 3 = 0
x^2- 2x - 8 = 0
(x + 2)(x - 4) = 0
x = -2
x = 4