
IG2Ashley班周测-week13
Authored by 榆婷 陈
Mathematics
8th Grade
Used 1+ times

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23 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列因式分解正确的是( )
2a²﹣4a=2(a²+a)
﹣a²+4=(a+2)(2﹣a)
a²﹣10a+25=a(a﹣10)+25
a²﹣2a+1=(a+1)²
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列各式从左到右的变形为分解因式的是( )
x(x﹣y)=x²﹣xy
x²+2xy+1=x(x+2y)+1
(y﹣1)(y+1)=y²﹣1
x(x﹣3)+3(x﹣3)=(x+3)(x﹣3)
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
x≥﹣2
x≠﹣2
x≠0
x≠2
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
不变
是原来的3倍
是原来的9倍
是原来的6倍
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列分式中是最简分式的是( )
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
±1
1
﹣1
0
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
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