1.(x-1)²-2(x-1)=0
(x-1)(x-1-2)=0
(x-1)(x-3)=0
x-1=0或x-3=0
x=1或x=3
2.(2x+1)²=3(2x+1)
(2x+1)(2x+1-3)=0
(2x+1)(2x-2)=0
2x+1=0或2x-2=0
x=-1/2或x=1
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