Odpowiedź:
1. Zapisz w najprostszej postaci
(2x-3) (4x-3) - (2x-3) (3x-1)= 8x²-6x-12x+9-(6x²-2x-9x+3)= 8x²-18x+9-(6x²-11x+3)= 2x²-7x+6
2. Oblicz: (2a-3) (3x+1) = 6ax+2a-9x-3
3. Oblicz - (3+2a) (a²-3) = 3a²-9+2a³-6a= 2a³+3a²-6a-9
4. Przyjmij, że
K=3m-12
L=7-2n+3m
M= -3+2n-4
i oblicz:
a) 2K-L -M= 2(3m-12)-7+2n-3m+3-2n+4= 6m-12-3m= 3m-12
b) M-2L= -3+2n-4-2(7-2n+3m)= -3+2n-4-14+2n-6m= = 4n-6m-22
