(3x²一6x十4)/(x²一3x十2)<1
(3x²一6x十4)/(x²一3x十2)-1<0
【(3x²一6x十4)-(x²一3x十2)】/(x²一3x十2)<0
(2x²一3x十2)/(x²一3x十2)<0
(2x²一3x十2)/(x-1)(x-2)<0
2x²一3x十2
=2(x²-1.5x+0.5625)+0.875
=2(x-0.75)²>0
不等式(2x²一3x十2)/(x-1)(x-2)<0两边同时除以(2x²一3x十2),不等号方向不变
1/(x-1)(x-2)<0
即(x-1)(x-2)<0且x≠1、x≠2
所以不等式解集:x∈(1,2)