Ta có △\(=b^2-4ac=\left[-2\left(2m-1\right)\right]^2-4.\left(m+1\right).\left(-3+m\right)=4\left(2m-1\right)^2+4\left(m+1\right)\left(3-m\right)=16m^2-16m+4+12m-4m^2+12-4m=12m^2-8m+16=\left(2\sqrt{3}x\right)^2-2.2\sqrt{3}.\frac{2\sqrt{3}}{3}+\frac{4}{3}+\frac{44}{3}=\left(2\sqrt{3}x-\frac{2\sqrt{3}}{3}\right)^2+\frac{44}{3}>0\)
Suy ra phương trình luôn có nghiệm