整式化简题库及答案.docVIP

整式化简题库及答案

一、单项选择题（总共10题，每题2分）

1.化简多项式\((3x^2-2x+1)-(x^2+3x-4)\)的结果是

A.\(2x^2-5x+5\)

B.\(2x^2+x-3\)

C.\(4x^2-5x+5\)

D.\(2x^2-x-3\)

答案：B

2.多项式\((2a^2+3a-1)+(a^2-2a+5)\)化简后的结果是

A.\(3a^2+a+4\)

B.\(3a^2-a+4\)

C.\(3a^2+a-6\)

D.\(3a^2-a-6\)

答案：A

3.化简\((4y^2-3y+2)-(2y^2+y-3)\)的结果是

A.\(2y^2-4y+5\)

B.\(2y^2+2y-1\)

C.\(2y^2-4y-1\)

D.\(2y^2+4y+5\)

答案：B

4.多项式\((5z^2-2z+1)+(3z^2+4z-2)\)化简后的结果是

A.\(8z^2+2z-1\)

B.\(8z^2-6z-1\)

C.\(8z^2+6z-1\)

D.\(8z^2-2z-1\)

答案：C

5.化简\((7w^2-5w+3)-(3w^2+2w-1)\)的结果是

A.\(4w^2-7w+4\)

B.\(4w^2+7w+4\)

C.\(4w^2-7w-4\)

D.\(4w^2+7w-4\)

答案：A

6.多项式\((6x^2-4x+2)+(2x^2+3x-1)\)化简后的结果是

A.\(8x^2-x+1\)

B.\(8x^2+x+1\)

C.\(8x^2-x-1\)

D.\(8x^2+x-1\)

答案：B

7.化简\((9a^2-6a+4)-(5a^2+2a-3)\)的结果是

A.\(4a^2-8a+7\)

B.\(4a^2+8a+7\)

C.\(4a^2-8a-7\)

D.\(4a^2+8a-7\)

答案：A

8.多项式\((8b^2-3b+2)+(2b^2+4b-1)\)化简后的结果是

A.\(10b^2+b+1\)

B.\(10b^2-b+1\)

C.\(10b^2+b-1\)

D.\(10b^2-b-1\)

答案：B

9.化简\((11c^2-7c+5)-(6c^2+3c-2)\)的结果是

A.\(5c^2-10c+7\)

B.\(5c^2+10c+7\)

C.\(5c^2-10c-7\)

D.\(5c^2+10c-7\)

答案：A

10.多项式\((12d^2-8d+6)+(3d^2+5d-2)\)化简后的结果是

A.\(15d^2-3d+4\)

B.\(15d^2+3d+4\)

C.\(15d^2-3d-4\)

D.\(15d^2+3d-4\)

答案：B

二、多项选择题（总共10题，每题2分）

1.下列哪个多项式化简后结果为\(3x^2+2x-1\)？

A.\((5x^2-2x+3)-(2x^2-4x-2)\)

B.\((4x^2+x-3)+(x^2-3x+2)\)

C.\((6x^2-3x+2)-(3x^2+x-1)\)

D.\((7x^2-4x+3)-(4x^2-2x-1)\)

答案：A,C

2.下列哪个多项式化简后结果为\(2y^2-5y+3\)？

A.\((6y^2-3y+2)-(4y^2+y-1)\)

B.\((5y^2+2y-1)+(3y^2-7y+4)\)

C.\((7y^2-5y+3)-(5y^2+2y-1)\)

D.\((8y^2-4y+2)-(6y^2-3y+1)\)

答案：C,D

3.下列哪个多项式化简后结果