-2b 圖6 44. 解:原式= ····················································································· = ··································································································· 查看更多

 

題目列表(包括答案和解析)

1、下列計算結(jié)果最小的是( 。

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下列根式中與
24
是同類二次根式的是( 。
A、
2
B、
3
C、
5
D、
6

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2、把方程2x-2=6-3x移項,得(  )

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已知關(guān)于x,y的多項式ax2+2xy-x與3x2-
12
bxy+3y的差不含二次項,則a2-2b=
 

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單項式-
3xy2
5
的系數(shù)和次數(shù)分別是( 。
A、-
1
5
,2
B、-
3
5
,2
C、
3
5
,3
D、-
3
5
,3

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