. ,

X2 4 = 0 (X2;X1)X2 13 +30 = 0 (X2;X1)X2 5X + 6 = 0 (X1;X2)X2 8X = 0 (X1;X2) X2 X - 6 = 0 (X1;X2)X2 + 7X 30 = 0 (X1;X2)X2 + 4X = 0 (X1;X2)X2 + 13X + 42 = 0 (X2;X1)X2 + 3X = 0 (X2;X1)X2 + X 42 = 0 (X2;X1)

X2 11X + 18 =0

X2 + 5X 14 = 0

4X2 -- 4X +1 = 0

X2 16X = 02X2 4 = 05X2 = 0

X2 X 56 = 0 X2 + 15X +56 = 0

N X2 + pX +g = 0 mkkoooX! + X2 = -p

X1 * X2 = g

, , , . . , . . , ?

aX2 + bX + c = 0 D = b2 -4ac X1=(-b + )/2a X2 = (-b - )/ 2a

aX2 + bX + c = 0

D < 0

D < 0

D = 0

1 X =-b/2a

2 X = (-b+ )/ 2aX =(-b- )/2a

Ax2 = 0AX2 + C = 0 AX2 + BX = 01 > 0 C< 02 = 0 2 X=0, X =-b/a