
(双减政策局限)你好,b爱问问题的人z :解:∵m,x,y满足2/3(x-5)²+5|m|=0且2/3(x-5)²≥0,5|m|≥0∴x-5=0,m=0解得x=5,m=0又满足-2a²b^(y+1)与7b³a²是同类项∴y+1=3解得y=2∴2x²-6y²
2022-08-18
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