配套习题- 用配方法解一元二次方程 -【青果学院】

1/5单选题

难度：

1.

一元二次方程的根为（）

A	x=3
B
C
D

正确答案：Qw==

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

2/5单选题

难度：

2.若（x+1）²-1=0，则x的值等于（）

A
B
C
D

正确答案：RA==

PGRpdj7op6PvvJrnp7vpobnlvpfvvIzvvIh4KzHvvIk8c3VwPjI8L3N1cD49Me+8jDxicj7lvIDmlrnlvpfvvIx4KzE9wrEx77yMPGJyPuino+W+l3g8c3ViPjE8L3N1Yj49MO+8jHg8c3ViPjI8L3N1Yj49LTIuIDwvZGl2PjxkaXY+5pWF6YCJRC4gPC9kaXY+

3/5单选题

难度：

3.用配方法解方程x²-2x-1=0时，配方后得的方程为（）

A	（x+1）²=0
B	（x-1）²=0
C	（x+1）²=2
D	（x-1）²=2

正确答案：RA==

PGRpdj7op6PvvJrmiormlrnnqIt4PHN1cD4yPC9zdXA+LTJ4LTE9MOeahOW4uOaVsOmhueenu+WIsOetieWPt+eahOWPs+i+ue+8jOW+l+WIsHg8c3VwPjI8L3N1cD4tMng9Me+8jDxicj7mlrnnqIvkuKTovrnlkIzml7bliqDkuIrkuIDmrKHpobnns7vmlbDkuIDljYrnmoTlubPmlrnvvIzlvpfliLB4PHN1cD4yPC9zdXA+LTJ4KzE9MSsxPGJyPumFjeaWueW+l++8iHgtMe+8iTxzdXA+Mjwvc3VwPj0yLiA8YnI+5pWF6YCJRC4gPC9kaXY+

4/5单选题

难度：

4.用配方法解关于x的一元二次方程x²-2x-3=0，配方后的方程可以是（）

A	（x-1）²=4
B	（x+1）²=4
C	（x-1）²=16
D	（x+1）²=16

正确答案：QQ==

PGRpdj7op6PvvJrmiormlrnnqIt4PHN1cD4yPC9zdXA+LTJ4LTM9MOeahOW4uOaVsOmhueenu+WIsOetieWPt+eahOWPs+i+ue+8jOW+l+WIsHg8c3VwPjI8L3N1cD4tMng9M++8jDxicj7mlrnnqIvkuKTovrnlkIzml7bliqDkuIrkuIDmrKHpobnns7vmlbDkuIDljYrnmoTlubPmlrnvvIzlvpfliLB4PHN1cD4yPC9zdXA+LTJ4KzE9Mysx77yMPGJyPumFjeaWueW+l++8iHgtMe+8iTxzdXA+Mjwvc3VwPj00LiA8L2Rpdj4=

5/5单选题

难度：

5.用配方法解关于x的方程x²+px+q=0时，方程可变形为（）

A
B
C
D

正确答案：QQ==

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