1.Diket FoG (x) = x² - 3x + 2 G (x) = 5x - 1 Maka F (x) = ? 2.Diket FoG (x) = 2x² + 3 F (x) = 3x - 2 Maka G (x) = ? Tolong ya kak segera di jawabin...

1) (f o g)(x) = x^2 - 3x + 2
f(g(x)) = x^2 - 3x + 2
f(5x - 1) = x^2 - 3x + 2
Misal (5x - 1) = a => 5x = a + 1 => x = (a + 1)/5
f(a) = ((a + 1)/5)^2 - 3(a + 1)/5 + 2
f(a) = (a^2 + 2a + 1)/25 - (3a + 3)/5 + 2
f(a) = (a^2 + 2a + 1 - 5(3a + 3) + 25(2))/25
f(a) = (a^2 + 2a + 1 - 15a - 15 + 50)/25
f(a) = (a^2 - 13a + 36)/25
f(x) = (x^2 - 13x + 36)/25

2) (f o g)(x) = 2x^2 + 3
f(g(x)) = 2x^2 + 3
3g(x) - 2 = 2x^2 + 3
3g(x) = 2x^2 + 5
g(x) = (2x^2 + 5)/3

^ = pangkat

Kalau ada yang bingung tanya aja..