x方-4x+3 =0
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x方-4x+3=0x方-4x+3=0x方-4x+3=0x方-4x+3=0(x-1)*(x-3)=0x=1或x=3答：x²-4x+3=0x²-x-3x+3=0x(x-1)-3(x-1
x方-4x+3 =0
x方-4x+3 =0
x方-4x+3 =0
x方-4x+3 =0
(x-1)*(x-3)=0
x=1或x=3
答：
x²-4x+3=0
x²-x-3x+3=0
x(x-1)-3(x-1)=0
(x-3)(x-1)=0
解得：x=1或者x=3
x方-4x+3 =0
x方-4x+3=0
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