有關My3的精選大全

My3-year-oldsonandIlivedaveryhardlifebecauseIhadbeenout...
問題詳情:My3-year-oldsonandIlivedaveryhardlifebecauseIhadbeenoutofworksincetwoyearsago.Beingpoorisaterriblefeelingwhenmy3-year-oldsonfinisheshismealandsays,“CanIhavesomemorebreadandjamplease,Mummy?”A...
要是關於x、y的多項式my3+3nx2y+2y3﹣x2y+y不含三次項,求2m+3n的值.
問題詳情:要是關於x、y的多項式my3+3nx2y+2y3﹣x2y+y不含三次項,求2m+3n的值.【回答】考點:多項式.分析:先合併同類項,根據已知得出m+2=0,3n﹣1=0,求出m、n的值後代入進行計算即可.解答:解:my3+3nx2y+2y3﹣x2y+y=(m+2)y3+(3n﹣1)x2y+y,∵關於x...
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