(2x-1)(2x-1+3)+2=0
(2x-1)(2x+2)+2=0
4x的平方-2x+4x-2+2=0
4x的平方+2x=0
x(4x+2)=0
x=0 4x+2=0
x=-2分之1
所以x=0或x=-2分之1
:(2x-1)的平方+3(2x-1)+2=0
(2x-1+1)(2x-1+2)=0
2x(2x+1)=0
x1=0
x2=-1/2
(2x-1)²+3(2x-1)+2=0
设(2x-1)=t
t²+3t=2=0
(t+1)(t+2)=0
t1=-1 t2=-2
∴2x-1=-1 2x-1=-2
x=0 x= -1/2
(2X+1)平方+3(2X+1)+2=0
(2x+1+2)(2x+1+1)=0
(2x+3)(2x+2)=0
x1=-3/2
x2=-1