配套习题-用配方法解一元二次方程 -【青果学院】

本课配套习题挑战模式1/5

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单选题

难度系数：

1.

一元二次方程的根为（）

A:
x=3

B:

C:

D:

提示1：PHA+5qC55o2u55u05o6l5byA5bmz5pa55rOV6Kej5LiA5YWD5LqM5qyh5pa556iL55qE5q2l6aqk77yM5YWI56e76aG577yM5oqK5pyq55+l5pWw5Y2V54us5pS+5Zyo562J5byP5bem6L65PC9wPg==
提示2：PHA+5YaN5byA5pa5LOazqOaEj+W8gOaWueeahOazqOaEj+eCue+8jOacieS4pOS4quague+8mzxicj48L3A+
答案：Qw==
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

本课配套习题挑战模式2/5

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单选题

难度系数：

2.若（x+1）²-1=0，则x的值等于（）

A:

B:

C:

D:

提示1：IOimgeaKiuaWueeoi+WMluS4uuKAnOW3puW5s+aWue+8jOWPs+W4uOaVsO+8jOWFiOaKiuezu+aVsOWMluS4ujHvvIzlho3lvIDlubPmlrnlj5bmraPotJ/vvIzliIblvIDmsYLlvpfmlrnnqIvop6PigJ0=
提示2：IOi/kOeUqOaVtOS9k+aAneaDs++8jOS8muaKiuiiq+W8gOaWueaVsOeci+aIkOaVtOS9kw==
提示3：IOeUqOebtOaOpeW8gOaWueazleaxguS4gOWFg+S6jOasoeaWueeoi+eahOino++8jOimgeS7lOe7huinguWvn+aWueeoi+eahOeJueeCuQ==
答案：RA==
PGRpdj7op6PvvJrnp7vpobnlvpfvvIzvvIh4KzHvvIk8c3VwPjI8L3N1cD49Me+8jDxicj7lvIDmlrnlvpfvvIx4KzE9wrEx77yMPGJyPuino+W+l3g8c3ViPjE8L3N1Yj49MO+8jHg8c3ViPjI8L3N1Yj49LTIuIDwvZGl2PjxkaXY+5pWF6YCJRC4gPC9kaXY+

本课配套习题挑战模式3/5

返回课程

单选题

难度系数：

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

提示1：IOaKiuW4uOaVsOmhueenu+WIsOetieWPt+eahOWPs+i+ue+8mw==
提示2：IOaKiuS6jOasoemhueeahOezu+aVsOWMluS4ujHvvJs=
提示3：IOetieW8j+S4pOi+ueWQjOaXtuWKoOS4iuS4gOasoemhueezu+aVsOS4gOWNiueahOW5s+aWuQ==
答案：RA==
PGRpdj7op6PvvJrmiormlrnnqIt4PHN1cD4yPC9zdXA+LTJ4LTE9MOeahOW4uOaVsOmhueenu+WIsOetieWPt+eahOWPs+i+ue+8jOW+l+WIsHg8c3VwPjI8L3N1cD4tMng9Me+8jDxicj7mlrnnqIvkuKTovrnlkIzml7bliqDkuIrkuIDmrKHpobnns7vmlbDkuIDljYrnmoTlubPmlrnvvIzlvpfliLB4PHN1cD4yPC9zdXA+LTJ4KzE9MSsxPGJyPumFjeaWueW+l++8iHgtMe+8iTxzdXA+Mjwvc3VwPj0yLiA8YnI+5pWF6YCJRC4gPC9kaXY+

本课配套习题挑战模式4/5

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单选题

难度系数：

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

提示1：IOaKiuW4uOaVsOmhueenu+WIsOetieWPt+eahOWPs+i+ue+8mw==
提示2：IOaKiuS6jOasoemhueeahOezu+aVsOWMluS4ujHvvJs=
提示3：IOetieW8j+S4pOi+ueWQjOaXtuWKoOS4iuS4gOasoemhueezu+aVsOS4gOWNiueahOW5s+aWuS4=
答案：QQ==
PGRpdj7op6PvvJrmiormlrnnqIt4PHN1cD4yPC9zdXA+LTJ4LTM9MOeahOW4uOaVsOmhueenu+WIsOetieWPt+eahOWPs+i+ue+8jOW+l+WIsHg8c3VwPjI8L3N1cD4tMng9M++8jDxicj7mlrnnqIvkuKTovrnlkIzml7bliqDkuIrkuIDmrKHpobnns7vmlbDkuIDljYrnmoTlubPmlrnvvIzlvpfliLB4PHN1cD4yPC9zdXA+LTJ4KzE9Mysx77yMPGJyPumFjeaWueW+l++8iHgtMe+8iTxzdXA+Mjwvc3VwPj00LiA8L2Rpdj4=

本课配套习题挑战模式5/5

返回课程

单选题

难度系数：

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:

提示1：IOaKiuW4uOaVsOmhueenu+WIsOetieWPt+eahOWPs+i+ue+8mw==
提示2：IOaKiuS6jOasoemhueeahOezu+aVsOWMluS4ujHvvJs=
提示3：IOetieW8j+S4pOi+ueWQjOaXtuWKoOS4iuS4gOasoemhueezu+aVsOS4gOWNiueahOW5s+aWuS4=
答案：QQ==
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本课配套习题挑战模式1/5

本课配套习题挑战模式2/5

本课配套习题挑战模式3/5

本课配套习题挑战模式4/5

本课配套习题挑战模式5/5

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