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IG2Ashley班-因式分解小测

Authored by 榆婷 陈

Mathematics

8th Grade

Used 28+ times

IG2Ashley班-因式分解小测
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12 questions

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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

因式分解:a²﹣4=(  )

(a+4)(a﹣4)

(a+4)(a﹣2)

(a+2)(a﹣4)

(a+2)(a﹣2)

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

下列各式中,能用平方差公式分解因式的是(  )

﹣x²﹣y²

x²﹣5y²

x²+4y²

﹣x²+y²

7.

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

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