mohonn tolong bantuannya yaa teman :)

1. (G o F) (x)
G(F(x))
G(x-3)
(x-3)² + 2(x-3)
X² - 6x + 9 + 2x - 6

=X² - 4x + 3

2. (G o F) (2)
G(F(2))
G(2(2)² + 5(2) - 7)
G(8 + 10 - 7)
G(11)
3(11) - 12
33 - 12

=21

3. (G o F) (2)
G(F(2))
G(2(2) + 3)
G(7)
3(7)² - 2(7) + 5
147 - 14 + 5

=138

4. (F o G) (x)
F(G(x))
F(2x + 4)
2(2x + 4)² - 5(2x + 4) + 3
2(4x² + 16x + 16) - 10x - 20 + 3
8x² + 32x + 32 - 10x - 20 + 3

=8x² + 22x + 15