3(x-1)次方×2(x-1)次方=6(2x-3)次方6(x-1)4次方=6(2x-3)次方(x-1)4次方=(2x-3)次方(x-1) 次方=|2x-3|(x-1.5+0.5) 次方/2=|x-1.5|设x-1.5=y(y+0.5)次方=2yy=0.5, |x-1.5|=0.5x1=1(舍去)x2=2