本课配套习题挑战模式1/5
单选题
难度系数:
1.用直接开平方法解方程(x-3)2=8,得方程的根为( )
A: |
B: |
C: |
D: |
一次做对,真牛!
+5奖励规则>
- 提示1:IOaKingtM+eci+aIkOS4gOS4quaVtOS9kw==
- 提示2:IOebtOaOpeeUqOW8gOW5s+aWueazlQ==
- 提示3:IOaxguWHungtM+WQju+8jOi/m+iAjOaxgng=
- 答案:Qg==
PGRpdj7op6PvvJriiLU8aW1nIHdpZHRoPTc4IGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzE1LzIyL3JCQUNFMU1IT1dheENvbmdBQUFCLVJlNnFxdzMwOC5wbmciPjwvZGl2PjxkaXY+4oi0PGltZyB3aWR0aD04NSBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC9GMi82Mi9yQkFDRkZNSE9XYlJsWTlrQUFBQ0VtV1JXZk00OTkucG5nIj4sPC9kaXY+PGRpdj7iiLQ8aW1nIHdpZHRoPTE2NiBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC9GMi82Mi9yQkFDRkZNSE9XYlI0OW85QUFBQ3BWak5fcGcwNTAucG5nIj48L2Rpdj48ZGl2PuaVhemAiUI8L2Rpdj4=
本课配套习题挑战模式2/5
单选题
难度系数:
2.一元二次方程=0的根( )
A: |
B: |
C: |
D: |
一次做对,真牛!
+5奖励规则>
- 提示1:IOi/kOeUqOmFjeaWueazlQ==
- 提示2:IOWwhuWOn+aWueeoi+W3pui+ueWGmeWHuuWujOWFqOW5s+aWueW8j+WNs+WPrw==
- 答案:RA==
PGRpdj7op6PvvJrljp/mlrnnqIvlt6bovrnphY3mlrnvvIzlvpc8aW1nIHdpZHRoPTg2IGhlaWdodD00MiBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzE1LzIyL3JCQUNFMU1IT1d6U2EzYzJBQUFDWWhpOWxSNDMyNy5wbmciPiw8L2Rpdj48ZGl2PuKItDxpbWcgd2lkdGg9NzkgaGVpZ2h0PTQyIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvRjIvNjIvckJBQ0ZGTUhPV3p6U09JekFBQUI1RU9HREtRMDcxLnBuZyI+PC9kaXY+PGRpdj7mlYXpgIlEPC9kaXY+
本课配套习题挑战模式3/5
单选题
难度系数:
3.一元二次方程x2-4x+3=0的解是( )
A: |
B: |
C: |
D: |
一次做对,真牛!
+5奖励规则>
- 提示1:6KeC5a+f5pa556iL55qE57O75pWw5LmL6Ze054m55b6B
- 提示2:IOehruWumuKWs+eahOWAvA==
- 提示3:IOWIqeeUqOWFrOW8j+azleaxguaguQ==
- 答案:RA==
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
本课配套习题挑战模式4/5
单选题
难度系数:
4.方程的两根为( )
A: |
B: |
C: |
D: |
一次做对,真牛!
+5奖励规则>
- 提示1:IOWIhuaekOezu+aVsOeahOeJueW+gQ==
- 提示2:IOmAieeUqOWNgeWtl+ebuOS5mOWboOW8j+WIhuinow==
- 答案:QQ==
PGRpdj7op6PvvJo8aW1nIHdpZHRoPTk1IGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzE1LzIzL3JCQUNFMU1IT1hpaVZCOFdBQUFCN0YwQ21PSTA2Mi5wbmciPjwvZGl2PjxkaXY+PGltZyB3aWR0aD0xMTIgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvMTUvMjMvckJBQ0UxTUhPWGp5cU84ZUFBQUNMMElQNko0NDI2LnBuZyI+PC9kaXY+PGRpdj7op6Plvpc8aW1nIHdpZHRoPTEwMyBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC9GMi82My9yQkFDRkZNSE9YaXppQm14QUFBQjlEY2w5dEU0MjQucG5nIj48L2Rpdj48ZGl2PuaVhemAiUE8L2Rpdj4=
本课配套习题挑战模式5/5
单选题
难度系数:
5.方程的解是( )
A: |
B: |
C: |
D: |
一次做对,真牛!
+5奖励规则>
- 提示1:IOmmluWFiOenu+mhueS9v+W+l+WPs+i+uT0w
- 提示2:IOWPmOW9ouaIkDxpbWcgd2lkdGg9NzYgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvMTUvMjMvckJBQ0UxTUhPWHlBYzFiTkFBQUIzU0hOZmtrODY0LnBuZyI+
- 提示3:IOWPmOaIkOS4gOWFg+S4gOasoeaWueeoi+axguinow==
- 答案:Qw==
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