
IG2 AI课堂小测
Quiz
•
Mathematics
•
8th Grade
•
Practice Problem
•
Hard
榆婷 陈
Used 3+ times
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17 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列等式中,从左向右的变形为因式分解的是( )
x3﹣x=x(x﹣1)(x+1)
a2(a﹣1)=a3﹣a2
a2﹣2a﹣1=a(a﹣2)﹣1
(a﹣3)(a+3)=a2﹣9
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列等式从左到右的变形中,属于因式分解的是( )
x2﹣4+4x=(x+2)(x﹣2)+4x
(x+3)(x﹣1)=x2+2x﹣3
x2﹣6x=x(x﹣6)
a(x﹣y)=ax﹣ay
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
在多项式8a³b²﹣4a³bc中,各项的公因式是( )
a³b
4a³b
4a³
﹣a³
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
多项式﹣8x2y3z+12xy2z3﹣24x3yz2的公因式是( )
﹣xyz
﹣4x3y3z3
﹣4xyz
﹣x3y3z3
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列多项式中,可以用完全平方式进行因式分解的是( )
x2+2xy+4y2
﹣9x2﹣y2
4x﹣y2
x2﹣8xy+16y2
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
把a2﹣2a+1分解因式,正确的是( )
a(a﹣2)+1
(a+1)2
(a+1)(a﹣1)
(a﹣1)2
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
因式分解:2a2﹣12a+18=( )
2(a2﹣6a+9)
(a﹣3)2
2(a﹣3)(a+3)
2(a﹣3)2
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