tolong jawab cepat yaa

a) ( 8x² + 4x - 16 ) : 4 = 2x² + x - 4

b) (x³ + 2x² - 5x - 6 ) : (x - 2) = x² + 2x - 5 - 6 - 2x³ - x² + 2,5x + 3
= x² - x² + 2x + 2,5x - 5 - 6 + 3 - 2x³
= 4,5x + 2 - 2x³

c) (x³ + 2x² - 5x) : (x² - x - 2) = x + 2 - 5 -x² + 2x + 5 - x³ - x² + 2,5x
= x + 2 - 5 + 5 - x² - x² + 2x + 2,5x - x³
= x + 2 + 4,5x - x³

d) (3x³ - 5x² - 12x + 20) : (x² - 4) = 3x - 5 - 12 + 20 - x³ + x² - 3x - 5
= 3x - 3x - 5 - 12 + 20 - 5 - x³ + x²
= (-2) - x³ + x²

maaf jika salah