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- 2x + y = 2
x² - 9 + 3y - x + 2 = x² - 4x + 4 + y
- 2x + y = 2
x² - x² - x + 4x + 3y - y = 4 - 2 + 9
- 2x + y = 2
3x + 2y = 11
- 2x + y = 2
3x + 2y = 11
3x = 11 - 2y
x = (11 - 2y)/3
- 2 * (11 - 2y)/3 + y = 2/ * 3
- 2(11 - 2y) + 3y = 6
- 22 + 4y + 3y = 6
7y = 6 + 22
7y = 28
y = 7/28 = 1/4
- 2x + y = 2
- 2x + 1/4 = 2
- 2x = 2 - 1/4 = 1 3/4
x = 1 3/4 : - 2 = - 7/8
odp
x = - 7/8
y = 1/4
x² -9+3y-x+2=x² -2x+4+y
x² -x² -x+2x+3y-y=9-2+4
x+2y=11
x=11-2y
(11-2y-3)(11-2y+3)+3y-(11-2y)+2=(11-2y-2)² +y
(8-2y)(14-2y)+3y-(11-2y)+2=(11-2y-2)² +y
112+4y²+3y-11+2y+2=121+4y² +4+y
4y² +3y+2y-4y² -y=-112+11-2+121+4
4y=22
y=5,5
-2x+y=2
y=2+2x
-2x+(2+2x)=2
-2x+2x=2-2
0=0
Mam nadzieję,że o takie coś chodziło