x(x²+4x+3 )- 2(x+3 )=1
x/(x+3)(x+1)-2/(x+3)-1=0
两边同乘以(x+3)(x+1)
x-2(x+1)-(x+3)(x+1)=0
整理得:x-2x-2-x²-4x-3=0
x²+5x+5=0
x1=(-5+√5)/2
x2=(-5-√5)/2
x(x²+4x+3 )- 2(x+3 )=1
x/(x+3)(x+1)-2/(x+3)-1=0
两边同乘以(x+3)(x+1)
x-2(x+1)-(x+3)(x+1)=0
整理得:x-2x-2-x²-4x-3=0
x²+5x+5=0
x1=(-5+√5)/2
x2=(-5-√5)/2