1/(3x+1)+1/(9x^2+6x+1)=21/(3x+1)+1/(3x+1)^2 - 2=0(3x+1+1-2(3x+1)^2)/(3x+1)^2=0 ОДЗ: (3X+1)^2=0 9x^2+6x+1=0 D=36-36=0 x=-6/18=-1/3
3x+2-18x^2-12x-2=0-18x^2-9x=0-9x=0 или 2x+1=0x=0 x=-1/2ответ: 0; -0,5
1/(3x+1)+1/(9x^2+6x+1)=21/(3x+1)+1/(3x+1)^2 - 2=0
(3x+1+1-2(3x+1)^2)/(3x+1)^2=0 ОДЗ: (3X+1)^2=0
9x^2+6x+1=0
D=36-36=0
x=-6/18=-1/3
3x+2-18x^2-12x-2=0
-18x^2-9x=0
-9x=0 или 2x+1=0
x=0 x=-1/2
ответ: 0; -0,5