paké caranya ....................

a][
(12x³ + 4x²) / 2x² = 6x + 2

b][
(x² + 5x + 6) / (x + 2)
= (x + 3)(x + 2) / (x + 2)
= x + 3

c][
(2x² - x - 10) / (x + 2)
= (2x - 5)(x + 2) / (x + 2)
= 2x - 5

d][
(2x³ + 7x² - 14x - 40) / (2x - 5)
= (2x - 5)(x² + 6x + 8) / (2x - 5)
= x² + 6x + 8