中学生网络课堂本课配套习题挑战模式1/5
单选题
难度系数：
1.已知：关于x的一元二次方程mx2-3（m-1）x+2m-3=0若m为整数，且方程的两个根均为正整数，求m的值（ ）
| A: m=-1或m=-3 |
| B: m=-1 |
| C: m=-3 |
| D: m=-2 |
一次做对，真牛！
+5奖励规则>
- 提示1：IOeUqOWboOW8j+WIhuino+azleino+WQq23nmoTkuIDlhYPkuozmrKHmlrnnqIs=
- 提示2：IOWIhuaekOavj+S4gOS4quague+8jOS9v+WIhuWtkOaYr+WIhuavjeWAjeaVsA==
- 答案：QQ==
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本课配套习题挑战模式2/5
单选题
难度系数：
2.关于x的一元二次方程（m-1）x2-2mx+m+1=0. 整数m为（ ）时，此方程的两个根都为正整数.
| A: m=2 |
| B: m=3 |
| C: m=-3 |
| D: m=2或m=3 |
一次做对，真牛！
+5奖励规则>
- 提示1：IOWIpOWIq+W8j+Wkp+S6jjA=
- 提示2：IOihqOekuuWHuuagueadpe+8jOS9v+WFtuS4uuaVtOaVsA==
- 答案：RA==
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本课配套习题挑战模式3/5
单选题
难度系数：
3.已知关于x的一元二次方程（m2-1）x2-6（3m-1）x+72=0. 求整数m是（ ）时，此方程有两个不相等的正整数根？
| A: m=±1 |
| B: m=2 |
| C: m=3 |
| D: m=4 |
一次做对，真牛！
+5奖励规则>
- 提示1：IOmmluWFiOagueaNruW3suefpeadoeS7tuWPr+W+l208c3VwPjI8L3N1cD4tMeKJoDDvvIzov5vogIzlvpfliLBt4omgwrEx
- 提示2：IOeEtuWQjuagueaNruagueeahOWIpOWIq+W8j+KWs++8njDvvIzlj6/lvpdt4omgMw==
- 提示3：IOWGjeWIqeeUqOaxguagueWFrOW8j+eUqOWQq23nmoTlvI/lrZDooajnpLp477yM5Zug5Li677yM5pa556iL5pyJ5Lik5Liq5LiN55u4562J55qE5q2j5pW05pWw5qC577yM5omA5Lul5YiG5oOF5Ya16K6o6K66beeahOWAvOWNs+WPrw==
- 答案：Qg==
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本课配套习题挑战模式4/5
单选题
难度系数：
4.关于x的一元二次方程mx2-（m+3）x+3=0有两个不相等的实数根，若m为正整数，设方程的两个整数根分别为p，q（p＜q），则点P（p，q）的坐标（ ）
| A: （-1，-3） |
| B: （1，3） |
| C: （1，-3） |
| D: （-1，3） |
一次做对，真牛！
+5奖励规则>
- 提示1：IOWIqeeUqOagueeahOWIpOWIq+W8j+WIl+WHuuS4jeetieW8jw==
- 提示2：IOWIqeeUqOaxguagueWFrOW8j+azleihqOekuuWHuuaWueeoi+eahOS4pOS4quague+8jOWGjeagueaNrnjmmK/mlbTmlbDjgIFt5piv5q2j5pW05pWw5rGC5Ye6cOOAgXHvvIznhLblkI7lhpnlh7rlnZDmoIfljbPlj6/vvJs=
- 答案：Qg==
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本课配套习题挑战模式5/5
单选题
难度系数：
5.已知关于x的一元二次方程x2+2x+2k-4=0有两个不相等的实数根若k为正整数，且该方程的根都是整数，求k的值（ ）
| A: 5 |
| B: 4 |
| C: 3 |
| D: 2 |
一次做对，真牛！
+5奖励规则>
- 提示1：IOagueaNruaWueeoi+acieS4pOS4quS4jeebuOetieeahOWunuaVsOague+8jOW+l+WIsOagueeahOWIpOWIq+W8j+eahOWAvOWkp+S6jjDliJflh7rlhbPkuo5r55qE5LiN562J5byP
- 提示2：IOaJvuWHumvojIPlm7TkuK3nmoTmlbTmlbDop6Pnoa7lrprlh7pr55qE5YC877yM57uP5qOA6aqM5Y2z5Y+v5b6X5Yiw5ruh6Laz6aKY5oSPa+eahOWAvA==
- 答案：RA==
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