X = 3y + 2
(3y + 2)y + y - 6 = 0 *
*
3y^2 + 2y + y - 6 = 0
3y^2 + 3y - 6 = 0 // :3
y^2 + y - 2 = 0
D = 1 + 4*2 = 9 = 3^2
y1 = ( - 1 + 3)/2 = 2/2 = 1;
y2 = ( - 1 - 3)/2 = - 4/2 = - 2;
x1 = 3y + 2 = 3*1 + 2 = 5;
y1 = 1
x2 = 3y + 2 = - 6 + 2 = - 4
y2 = - 2
Ответ:
( 5; 1) ; ( - 4; - 2)