1) 4; -4
2) 16; -2
3) -13; 23
1) х1 = -4
х2 = 4
2) x-7 = 9
x-7 = -9
х1 = -2
х2 = 16
3) 5-y=18
5-y= -18
y1 = -13
y2 = 23
1) 4; -4
2) 16; -2
3) -13; 23
1) х1 = -4
х2 = 4
2) x-7 = 9
x-7 = -9
х1 = -2
х2 = 16
3) 5-y=18
5-y= -18
y1 = -13
y2 = 23