IG2 AI课堂小测

IG2 AI课堂小测

8th Grade

17 Qs

quiz-placeholder

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IG2 AI课堂小测

IG2 AI课堂小测

Assessment

Quiz

Mathematics

8th Grade

Practice Problem

Hard

Created by

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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