知│x-3y=6│与(x+2y+1)*(x+2y+1)互为相反数,则x= ,y=刚刚打错了正:已知│x-3y+6│与(x+2y+1)*(x+2y+1)互为相反数,则x= ,y=

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知│x-3y=6│与(x+2y+1)*(x+2y+1)互为相反数,则x= ,y=刚刚打错了正:已知│x-3y+6│与(x+2y+1)*(x+2y+1)互为相反数,则x= ,y=
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知│x-3y=6│与(x+2y+1)*(x+2y+1)互为相反数,则x= ,y=刚刚打错了正:已知│x-3y+6│与(x+2y+1)*(x+2y+1)互为相反数,则x= ,y=
知│x-3y=6│与(x+2y+1)*(x+2y+1)互为相反数,则x= ,y=
刚刚打错了
正:
已知│x-3y+6│与(x+2y+1)*(x+2y+1)互为相反数,则x= ,y=

知│x-3y=6│与(x+2y+1)*(x+2y+1)互为相反数,则x= ,y=刚刚打错了正:已知│x-3y+6│与(x+2y+1)*(x+2y+1)互为相反数,则x= ,y=
两式都大于等于0,所以
│x-3y+6│=0 且(x+2y+1)*(x+2y+1) =0
即x-3y+6=0 且x+2y+1=0
所以x=-3,y=1

题错了,两个都是正数

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