6x^2+x-2=0,
D=49,
x_1=-2/3,
x_2=-1/2,
6x^2+x-2=6(x+2/3)(x+1/2)=(3x+2)(2x+1),
13x+4=a(3x+2)+b(2x+1)=3ax+2a+2bx+b=(3a+2b)x+(2a+b),
{3a+2b=13,
{2a+b=4,
{-4a-2b=-8,
-a=5,
a=-5,
-10+b=4,
b=14,
(13x+4)/(6x^2+x-2)=(-5(3x+2)+14(2x+1))/((3x+2)(2x+1))=-5(3x+2)/((3x+2)(2x+1))+14(2x+1)/((3x+2)(2x+1))=-5/(2x+1)+14/(3x+2)
6x^2+x-2=0,
D=49,
x_1=-2/3,
x_2=-1/2,
6x^2+x-2=6(x+2/3)(x+1/2)=(3x+2)(2x+1),
13x+4=a(3x+2)+b(2x+1)=3ax+2a+2bx+b=(3a+2b)x+(2a+b),
{3a+2b=13,
{2a+b=4,
{3a+2b=13,
{-4a-2b=-8,
-a=5,
a=-5,
-10+b=4,
b=14,
(13x+4)/(6x^2+x-2)=(-5(3x+2)+14(2x+1))/((3x+2)(2x+1))=-5(3x+2)/((3x+2)(2x+1))+14(2x+1)/((3x+2)(2x+1))=-5/(2x+1)+14/(3x+2)