xn1y3的知识精选

单项式﹣xn+1y3与ybx2是同类项,则a,b的值分别为(  )A.a=1,b=2 B.a=1,b=3  C...
问题详情:单项式﹣xn+1y3与ybx2是同类项,则a,b的值分别为()A.a=1,b=2 B.a=1,b=3  C.a=2,b=2 D.a=2,b=3【回答】B【考点】同类项.【分析】根据同类项的概念可得方程:a+1=2,b=3,解方程求得a,b的值.【解答】解:∵单项式﹣xn+1y3与ybx2是同类...
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