Odpowiedź:
Zad.1
2x2 - 5x + 2xy + 15x + 2 = 2x2 + 10x + 2xy + 2
Zad.2
B
Zad.3
P1 = (2x + 2) * 2 + (x + 1) * 2
P1 = 4x + 4 + 2x + 2
P1 = 6x + 6
P2 = (4x - 2) * 2 + (2x - 1) * 2
P2 = 8x - 4 + 4x - 2
P2 = 12x - 6
