tolong bantuannya yaa

f (x) = 3 - x

f (x²)
= 3 - x²

(f (x)) ²
= (3 - x) (3 - x)
= 9 - 3x - 3x + x²
= 9 - 6x + x²

2 f (x)
= 2 (3 - x)
= 6 - 2x

Hasil dari :
f (x²) + (f (x))² - 2 f (x)
= (3 - x²) + (9 - 6x + x²) - (6 - 2x)
= -x² + x² -6x + 2x + 3 + 9 - 6
= -4x + 6