Odpowiedzi

2010-03-25T19:07:56+01:00
(5x+7y)-8(y+1)+3(x-y) dla x= 1/2 , y=1/4
5x+7y-8y-8+3x-3y=
=8x-4y-8

8* ½ - 4* ¼ -8 = 4-1-8 = -5
2010-03-25T19:09:05+01:00
(5x+7y)-8(y+1)+3(x-y) dla x= 1/2 , y=1/4
5x+7y-8y-8+3x-3y
8x-4y-8
4-0,75-8=-5