配套习题-含字母参数的一元二次方程的解法 -【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.若

，则

的值是（）

A:

B: 2

C:

D: 4

提示1：IOaKiuW3suefpeetieW8j+S4reeahGErYueci+WBmuS4gOS4quaVtOS9k++8jOi/m+ihjOW5s+aWueW3ruWFrOW8j+eahOiuoeeulw==
提示2：IOenu+mhueW8gOaWueWQjuWPr+W+l+WHumErYueahOWAvO+8jOWGjeeUsWErYuS4uumdnui0n+aVsO+8jOi/m+iAjOehruWumuWHumErYueahOWAvO+8jA==
提示3：IOS7o+WFpeaJgOaxgueahOW8j+WtkOS4reWMlueugO+8jOWNs+WPr+W+l+WIsOaJgOaxguW8j+WtkOeahOWAvC4=
答案：Qg==
PGRpdj7op6PvvJrvvIhhK2IrMe+8ie+8iGErYi0x77yJPTE177yMPGJyPuWPmOW9ouW+l++8mlvvvIhhK2LvvIkrMV1b77yIYSti77yJLTFdPTE177yMPGJyPuWNs++8iGErYu+8iTxzdXA+Mjwvc3VwPi0xPTE177yMPGJyPuenu+mhueW+l++8mu+8iGErYu+8iTxzdXA+Mjwvc3VwPj0xNu+8jDxicj7iiLRhK2I9NOaIlmErYj0tNO+8jDxicj7lj4hhK2LiiaUw77yM4oi0YStiPS006IiN5Y6777yMPGJyPuKItGErYj0077yMPGJyPuWImTxpbWcgd2lkdGg9NjggaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvRkMvODIvckJBQ0ZGTUp1LXFpVFJBUkFBQUNEWDBQVTQ4NjU4LnBuZyI+LiA8YnI+5pWF6YCJQi4gPC9kaXY+

本课配套习题挑战模式2/5

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单选题

难度系数：

2.下面方程一定有解的是（）

A: （x+5）²=a²+1

B: （x-3）²+1=0

C: （x+a）²=b

D: （ax+3）²+a²=0

提示1：IOinguWvn+Wbm+S4qumAiemhueeahOW9ouW8j+WPr+efpei/meWbm+S4quaWueeoi+mDveWPr+eUqOebtOaOpeW8gOW5s+aWueazleW+l+WHug==
提示2：IOS9huaYr+agueaNruebtOaOpeW8gOW5s+aWueazleWPr+efpeiLpeW5s+aWuemhueWcqOetieW8j+W3pui+ue+8jOWFtuS7lumhueWFqOmDqOenu+WIsOetieW8j+W3pui+ueeahOivne+8jOetieW8j+W3pui+ueeahOaVsOW/hemhu+S4uumdnui0n+aVsOaJjeiDveacieinoy4=
答案：QQ==
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

本课配套习题挑战模式3/5

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单选题

难度系数：

3.在实数范围内定义运算“⊕”，其法则为：a⊕b=a²-b²，则方程（4⊕3）⊕x=24的解为（）

A:

B:

C:

D:

提示1：IOWBmuWumuS5ieaWsOi/kOeul+eahOi/meexu+mimOebru+8jOWPqumcgOimgeS4peagvOaMieeFp+mimOebruS4reWumuS5ieeahOi/kOeul+i/m+ihjOS7v+eFp+iuoeeul+WNs+WPrw==
提示2：IOacrOmimOimgei/m+ihjOS4pOasoeaWsOi/kOeul+eahOiuoeeul++8jOWPqumcgOimgeWFiOeul+WHuuaLrOWPt+mHjDTiipUz55qE5YC877yM5YaN6L+b6KGM5LiA5qyh5paw6L+Q566X5Y2z5Y+v
答案：Qw==
PGRpdj7op6PvvJrnlLHpopjmhI/lvpfvvJo04oqVMz0xNi05PTfvvIw8YnI+N+KKlXg9MjTvvIw8YnI+NzxzdXA+Mjwvc3VwPi14PHN1cD4yPC9zdXA+PTI077yMPGJyPuenu+mhueW+l++8mng8c3VwPjI8L3N1cD49MjXvvIw8YnI+5Lik6L6555u05o6l5Y2h5bmz5pa55b6X77yaeD3CsTXvvIw8YnI+5pWF6YCJ77yaQy4gPC9kaXY+

本课配套习题挑战模式4/5

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单选题

难度系数：

4.一元二次方程2x²+px+q=0的两个根为3，4，那么因式分解二次三项式2x²+px+q=（）

A: （x-3）（x-4）

B: （x+3）（x+4）

C: 2（x-3）（x-4）

D: 2（x+3）（x+4）

提示1：IOagueaNruaWueeoizJ4PHN1cD4yPC9zdXA+K3B4K3E9MOeahOS4pOS4quagueS4ujPvvIw077yM5Y+v55+l5q2k5LqM5qyh5LiJ6aG55byP5LiA5a6a5Y+v5Lul5YiG6Kej5Li6PGltZyB3aWR0aD0xNTYgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvMUYvNkEvckJBQ0UxTUp1X1RqVGx4RkFBQUM1Q0xURFRVMTEyLnBuZyI+55qE5b2i5byPLg==
提示2：IOWPiOWboOS4uuS4gOWFg+S6jOasoeaWueeoizJ4PHN1cD4yPC9zdXA+K3B4K3E9MOeahOS6jOasoemhueezu+aVsOS4ujLvvIzmiYDku6Xlj6/ku6Xnoa7lrpo8aW1nIHdpZHRoPTggaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvMUYvNkEvckJBQ0UxTUp1X1REVXlOSEFBQUJIeXpua2dVMjgwLnBuZyI+55qE5YC85Li6Mi7ljbPlj6/pgInlh7rpgInpobk=
答案：Qw==
PGRpdj7op6PvvJriiLXkuIDlhYPkuozmrKHmlrnnqIsyeDxzdXA+Mjwvc3VwPitweCtxPTDnmoTkuKTkuKrmoLnkuLoz77yMNO+8jDxicj7iiLTkuozmrKHkuInpobnlvI8yeDxzdXA+Mjwvc3VwPitweCtxPTLvvIh4LTPvvInvvIh4LTTvvIkuIDxicj7mlYXpgIlDPC9kaXY+

本课配套习题挑战模式5/5

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单选题

难度系数：

5.关于x的一元二次方程（a-1）x²+x+a²+3a-4=0有一个实数根是x=0，则a的值为( )

A:

B: 1

C:

D:

提示1：IOacrOmimOagueaNruS4gOWFg+S6jOasoeaWueeoi+eahOagueeahOWumuS5ieOAgeWwhuWunuaVsOaguXg9MOS7o+WFpeWIsOS4gOWFg+S6jOasoeaWueeoi++8iGEtMe+8iXg8c3VwPjI8L3N1cD4reCthPHN1cD4yPC9zdXA+KzNhLTQ9MA==
提示2：IOWPr+WMluS4umE8c3VwPjI8L3N1cD4rM2EtND0w77yM5YaN55So5Y2B5a2X55u45LmY5rOV5rGC5q2k5pa556iL55qE6Kej5Y2z5Y+vO+S9huimgeazqOaEj+WOn+S4gOWFg+S6jOasoeaWueeoi+eahOS6jOasoemhueezu+aVsGEtMeKJoDDvvIzljbNh4omgMei/meS4qumZkOWItuadoeS7tu+8mw==
答案：Qw==
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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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