初二数学 (北师版上册)
二次根式
本课配套习题挑战模式1/5
单选题
难度系数:
1.下列各式中,与是同类二次根式的是( )
A: 2 |
B: |
C: |
D: |
一次做对,真牛!
+5奖励规则>
- 提示1:IDxpbWcgd2lkdGg9MTcgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvNjYvRkYvckJBQ0ZGT1lJX3JpNThRQ0FBQUJlQk1WQVZFNzgzLnBuZyI+PTxpbWcgd2lkdGg9MjUgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvQTMvMjMvckJBQ0UxT1lJX3JRcDRROUFBQUJqVmZMTU1zMjEzLnBuZyI+
- 答案:Qw==
6Kej77ya4oi1PGltZyB3aWR0aD0xNyBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC82Ni9GRi9yQkFDRkZPWUlfcmk1OFFDQUFBQmVCTVZBVkU3ODMucG5nIj49PGltZyB3aWR0aD0yNSBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC9BMy8yMy9yQkFDRTFPWUlfclFwNFE5QUFBQmpWZkxNTXMyMTMucG5nIj48YnI+4oi06YCJQzxicj4=
本课配套习题挑战模式2/5
单选题
难度系数:
2.计算-的结果是( )
A: 1 |
B: -1 |
C: |
D: |
一次做对,真牛!
+5奖励规则>
- 提示1:IOWMlueugOS6jOasoeagueW8j++8jOeEtuWQjuWQiOW5tg==
- 答案:Qw==
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
本课配套习题挑战模式3/5
单选题
难度系数:
3.下列运算正确的是( )
A: = |
B: =2 |
C: = |
D: |
一次做对,真牛!
+5奖励规则>
- 提示1:IOWIqeeUqOi/kOeul+azleWImei/m+ihjOiuoeeulw==
- 答案:Qw==
6Kej77yaPGltZyB3aWR0aD01MCBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC9BMy8yNC9yQkFDRTFPWUpCSEJLU3hvQUFBQjdSTVYwd0UwMTUucG5nIj49PGltZyB3aWR0aD0yNSBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC82Ni9GRi9yQkFDRkZPWUpCS1IyWXRWQUFBQmhTZHNLZzg0MjUucG5nIj7mraPnoa7vvIzlhbbku5bplJnor6/vvIzpgIlD
本课配套习题挑战模式4/5
单选题
难度系数:
4.计算-3(2-)的结果是( )
A: |
B: 2 |
C: |
D: |
一次做对,真牛!
+5奖励规则>
- 提示1:IOWMlueugOW5tuWQiOW5tg==
- 答案:QQ==
6Kej77yaPGltZyB3aWR0aD0yNSBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC9BMy8yNC9yQkFDRTFPWUpCYVNjYXRxQUFBQmtGNjlzM1kxMTkucG5nIj4tM++8iDI8aW1nIHdpZHRoPTE3IGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwL0EzLzI0L3JCQUNFMU9ZSkF1d2U3RU9BQUFCZGlUbWllazI0Mi5wbmciPi08aW1nIHdpZHRoPTI1IGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzY3LzAwL3JCQUNGRk9ZSkJlQzRfVm5BQUFCbDFPd1YzVTMxNS5wbmciPu+8iT00PGltZyB3aWR0aD0xNyBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC9BMy8yNC9yQkFDRTFPWUpBdXdlN0VPQUFBQmRpVG1pZWsyNDIucG5nIj4tM++8iDI8aW1nIHdpZHRoPTE3IGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwL0EzLzI0L3JCQUNFMU9ZSkF1d2U3RU9BQUFCZGlUbWllazI0Mi5wbmciPi0zPGltZyB3aWR0aD0xNyBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC9BMy8yNC9yQkFDRTFPWUpBdXdlN0VPQUFBQmRpVG1pZWsyNDIucG5nIj7vvIk8YnI+PTxpbWcgd2lkdGg9MjUgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvQTMvMjQvckJBQ0UxT1lKQmV6YUJyZUFBQUJqbHc3bnM4ODk1LnBuZyI+PGJyPumAiUE8YnI+