(2x+y)^2-4x-2y-3=0怎么化简
3个回答
(2x+y)^2-4x-2y-3=0
(2x+y)^2-2(2x+y)-3=0
(2x+y+1)(2x+y-3)=0
2x+y=-1或2x+y=3
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