- 问题详情:若□×2xy=16x3y2,则□内应填的单项式是()A.4x2y B.8x3y2C.4x2y2D.8x2y【回答】D【考点】单项式乘单项式.【分析】利用单项式的乘除运算法则,进而求出即可.【解答】解:∵□×2xy=16x3y2,∴□=16x3y2÷2xy=8x2y.故选:D.【点评】此题主要考查了单项式的乘除运算,正确掌握运算法则...
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- 问题详情:代数式4x3﹣3x3y+8x2y+3x3+3x3y﹣8x2y﹣7x3的值()A.与x,y有关 B.与x有关 C.与y有关 D.与x,y无关【回答】D【解答】解:4x3﹣3x3y+8x2y+3x3+3x3y﹣8x2y﹣7x3=(4+3﹣7)x3+(﹣3+3)x3y+(8﹣8)x2y=0.故代数式4x3﹣3x3y+8x2y+3x3+3x3y﹣8x2y﹣7x3的值与x,y无关....
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