初二数学 (北师版)
二次根式
本课配套习题挑战模式1/5
单选题
难度系数:
1.下列二次根式:①;②2;③;④,是最简二次根式的有( )
A: ①②④ |
B: ②③④ |
C: ①② |
D: ②④ |
一次做对,真牛!
+5奖励规则>
- 提示1:IOS+neaNruacgOeugOS6jOasoeagueW8j+a7oei2s+eahOadoeS7tu+8muiiq+W8gOaWueaVsOS4reS4jeWQq+acieWIhuavje+8m+iiq+W8gOaWueaVsOS4reS4jeWQq+iDveW8gOW+l+WwveaWueeahOWboOaVsOaIluWboOW8j+adpeWIpOaWreOAgg==
- 答案:RA==
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本课配套习题挑战模式2/5
单选题
难度系数:
2.下列各式:①,②,③,④(x>0)中,最简二次根式有( )个
A: 1 |
B: 2 |
C: 3 |
D: 4 |
一次做对,真牛!
+5奖励规则>
- 提示1:IOWFiOagueaNruS6jOasoeagueW8j+eahOaAp+i0qOWMlueugO+8jOWGjeagueaNruacgOeugOS6jOasoeagueW8j+eahOWumuS5ieWIpOaWreWNs+WPrw==
- 答案:QQ==
6Kej77yaPGltZyB3aWR0aD0xMTkgaGVpZ2h0PTQyIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvNjYvRkUvckJBQ0ZGT1lJNkRTQWUzUUFBQUN3QTB2cVcwNzY1LnBuZyI+77yMPGltZyB3aWR0aD00OCBoZWlnaHQ9NDIgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC9BMy8yMi9yQkFDRTFPWUk2Q3dadzlMQUFBQ0owMWQ1czAxNTEucG5nIj48YnI+5Y+q5pyJ4pGgPGltZyB3aWR0aD0xNyBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC9BMy8yMi9yQkFDRTFPWUk1LXhpMVVaQUFBQmRtd0dWbkk1MzMucG5nIj7mnIDnroA8YnI+4oi06YCJQTxicj4=
本课配套习题挑战模式3/5
单选题
难度系数:
3.下列根式中最简二次根式是( )
A: |
B: |
C: |
D: |
一次做对,真牛!
+5奖励规则>
- 提示1:IOWIpOWumuS4gOS4quS6jOasoeagueW8j+aYr+S4jeaYr+acgOeugOS6jOasoeagueW8j+eahOaWueazle+8jOWwseaYr+mAkOS4quajgOafpeacgOeugOS6jOasoeagueW8j+eahOS4pOS4quadoeS7tuaYr+WQpuWQjOaXtua7oei2s++8jOWQjOaXtua7oei2s+eahOWwseaYr+acgOeugOS6jOasoeagueW8j++8jOWQpuWImeWwseS4jeaYry4=
- 答案:QQ==
6Kej77yaQuOAgeWPr+W8gOaWueWMlueugDxicj5D44CB6KKr5byA5pa55pWw5ZCr5pyJ5YiG5q+N77ybPGJyPkTjgIHooqvlvIDmlrnmlbDlkKvmnInliIbmr43vvJs8YnI+5Zug5q2k77yM6L+Z5LiJ5Liq6YCJ6aG56YO95LiN5piv5pyA566A5LqM5qyh5qC55byPLiA8YnI+5pWF6YCJQS4g
本课配套习题挑战模式4/5
单选题
难度系数:
4.对于二次根式,以下说法不正确的是( )
A: 它是一个正数 |
B: 是一个无理数 |
C: 是最简二次根式 |
D: 它的最小值是3 |
一次做对,真牛!
+5奖励规则>
- 提示1:IOagueaNruS6jOasoeagueW8j+eahOaAp+i0qO+8jOiiq+W8gOaWueaVsOWkp+S6juetieS6jjDvvIzmoLnmja7pnZ7otJ/mlbDnmoTmgKfotKjvvIzpgJDkuIDliKTmlq0u
- 答案:Qg==
6Kej4oi1eDxzdXA+Mjwvc3VwPis55oC75piv5q2j5pWw77yM4oi05b2TeD0w5pe277yM5LqM5qyh5qC55byPPGltZyB3aWR0aD01NSBoZWlnaHQ9NDIgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC82Ni9GRi9yQkFDRkZPWUk4eURRX0xZQUFBQjlDTzI1V281ODkucG5nIj49M++8jOaYr+S4quacieeQhuaVsO+8jDxicj7iiLRC6ZSZLiA8YnI+5pWF6YCJQi4g
本课配套习题挑战模式5/5
单选题
难度系数:
5.下列二次根式化简:①,②,③。化简正确的有()个。
A: 0个 |
B: 1个 |
C: 2个 |
D: 3个 |
一次做对,真牛!
+5奖励规则>
- 提示1: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
- 提示2: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
- 答案:RA==
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