`ttcolor[#528B8B][౨ৎ.]``ttcolor[#528B8B][.]``ttcolor[#97FFFF][Cam]``ttcolor[#8DEEEE][sam]``ttcolor[#79CDCD][ita]``ttcolor[#528B8B][.]``ttcolor[#528B8B][.౨ৎ]`

`4x^2 - (3-6x)(7x-1)=1`

`4x^2 - (-42x^2 +27x-3)= 1`

`46x^2 -27x+3=1`

`46x^2 -27x+3-1=0`

`46x^2 -27x + 2=0`

`46x^2 -23x -4x +2=0`

`23x (2x-1) -2(2x-1)=0`

`(2x-1)(23x-2)=0`

`2x-1=0` hoặc `23x-2=0`

`2x=1` hoặc `23x=2`

`x= 1/2` hoặc `x=2/23`

Vậy `x∈{1/2; 2/23}`