Odpowiedzi

2010-03-24T16:51:31+01:00
-2x(3+2x)+2(6x+4)=-6x-4xkwadrat+12x+8=6x-4xkwadrat+8
-1/2(2x-4)-(-2x+4)= -x+2+2x-4=x-2
2010-03-24T16:52:22+01:00
2010-03-24T17:00:10+01:00
-6x-4x do kwadratu +12x-4 = 6-4x do kwadratu -4

-x+2+2x-4= 1-2

-8y-3b do kwadratu + 4a-4y+3b do kwadratu +7a= -12+11