`#tnvt`
`(2x-3)^2+3=3(x-1)^2-x^2`
`<=>(2x)^2-2.3.2x+3^2+3=3(x^2-2x+1)-x^2`
`<=>4x^2-12x+9+3=3x^2-6x+3-x^2`
`<=>4x^2-12x+12=2x^2-6x+3`
`<=>4x^2-2x^2-12x+6x+12-3=0`
`<=>2x^2-6x+9=0`
`<=>2.x^2-2.2.x. 3/2+2. 9/4+9/2=0`
`<=>2(x^2-2.x. 3/2+9/4)+9/2=0`
`<=>2(x-3/2)^2=-9/2`(Vô lý)
Vậy không có `x` thỏa mãn