diketahui f(x)=x nya pangkat 2 + 2x-5 dan g(x)=3x-1.tentukan a.(f o g)(x) b.(g o f)(x) c.(f o g)(3) D.nilai a jika (g o f)(a)=8 kak bantu yang yg bisa

a (f o g)(x)
= f(g(x))
= f(3x - 1)
= (3x - 1)² + 2(3x - 1) - 5
= (3x - 1)(3x - 1) + 2(3x - 1) - 5
= 9x² - 3x - 3x + 1 + 6x - 2 - 5
= 9x² - 6
b (g o f)(x)
= g(f(x))
= g(x² + 2x - 5)
= 3(x² + 2x - 5) - 1
= 3x² + 6x - 15 - 1
= 3x² + 6x - 16
c (f o g)(3)
= 9x² - 6
= 9(2)² - 6
= 36 - 6 = 30
d ga paham