1) 4х-66=18х-12-2х
4х-66=16х-12
2х-33=8х-6
6-33=8х-2х
-27=6х
х=-27/6
х=-4,5
2)-50х²-10х-50х-10=0
-5х²-х-5х-1=0
5х²+6х+1=0
Д=36-20=16
х=(-6±4)/10
х=-0,2 х=-1
1) 4х-66=18х-12-2х
4х-66=16х-12
2х-33=8х-6
6-33=8х-2х
-27=6х
х=-27/6
х=-4,5
2)-50х²-10х-50х-10=0
-5х²-х-5х-1=0
5х²+6х+1=0
Д=36-20=16
х=(-6±4)/10
х=-0,2 х=-1