- 問題詳情:若□×2xy=16x3y2,則□內應填的單項式是()A.4x2y B.8x3y2C.4x2y2D.8x2y【回答】D【考點】單項式乘單項式.【分析】利用單項式的乘除運算法則,進而求出即可.【解答】解:∵□×2xy=16x3y2,∴□=16x3y2÷2xy=8x2y.故選:D.【點評】此題主要考查了單項式的乘除運算,正確掌握運算法則...
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- 問題詳情:代數式4x3﹣3x3y+8x2y+3x3+3x3y﹣8x2y﹣7x3的值()A.與x,y有關 B.與x有關 C.與y有關 D.與x,y無關【回答】D【解答】解:4x3﹣3x3y+8x2y+3x3+3x3y﹣8x2y﹣7x3=(4+3﹣7)x3+(﹣3+3)x3y+(8﹣8)x2y=0.故代數式4x3﹣3x3y+8x2y+3x3+3x3y﹣8x2y﹣7x3的值與x,y無關....
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