(х-3)²-(х+1)²=12
х²-6х+9-(х²+2х+1)=12
х²-6х+9-х²-2х-1=12
-8х+8=12
-8х=12-8
-8х=4
х=-1/2
х=-0,5,х=-2-¹
(х-3)²-(х+1)²=12
х²-6х+9-(х²+2х+1)=12
х²-6х+9-х²-2х-1=12
-8х+8=12
-8х=12-8
-8х=4
х=-1/2
х=-0,5,х=-2-¹