Odpowiedź :
a) = 6x^3 - 6x^2 + 10x - 9x^2 + 9x - 15 = 6x^3 - 15x^2 + 19x -15
b) = 4x^2 - 10x + 10x^2 - 25x - 2x + 5 = 14x^2 - 37x + 5
a) = 6x^3 - 6x^2 + 10x - 9x^2 + 9x - 15 = 6x^3 - 15x^2 + 19x -15
b) = 4x^2 - 10x + 10x^2 - 25x - 2x + 5 = 14x^2 - 37x + 5