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.
若x=-1，y=2.则
的值等于( )
| A:
|
| B:
|
| C:
|
| D:
|
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+5byC5YiG5q+N5YiG5byP55u45Yqg5YeP77yM5YWI6YCa5YiG77yM5ZCO5Yqg5YePPC9wPg==
- 提示2：PHA+5YiG5q+N5piv5aSa6aG55byP5pe277yM6KaB5YWI6L+b6KGM5Zug5byP5YiG6KejPC9wPg==
- 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.
计算： 3a−1 −(a+3) 的结果等于 ( )
| A:
|
| B:
|
| C:
|
| D:
|
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+5byC5YiG5q+N5YiG5byP55u45Yqg5YeP77yM5YWI6YCa5YiG77yM5ZCO5Yqg5YePPC9wPg==
- 提示2：PHA+5YiG5byP5ZKM5pW05byP55u45Yqg5YeP77yM5oqK5pW05byP55yL5Li65LiA5Liq5pW05L2TPC9wPg==
- 提示3：PHA+5Yqg5ous5Y+35rOV5YiZPC9wPg==
- 答案：QQ==
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
本课配套习题挑战模式3/5
单选题
难度系数：
3.
计算
的结果是 ( )
| A: 2 |
| B:
|
| C:
|
| D:
|
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+5YiG5byP55qE5Yqg5YeP5LmY6Zmk5re35ZCI6L+Q566X77yM5YWI5LmY6Zmk77yM5ZCO5Yqg5YeP77yM5pyJ5ous5Y+355qE5YWI566X5ous6YeM6L6555qEPC9wPg==
- 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.化简
的结果是( )
的结果是( ) | A: 2x2 |
| B: y2-x2 |
| C: x2-y2 |
D:  |
一次做对，真牛！
+5奖励规则>
- 提示1：5YiG5byP55qE5re35ZCI6L+Q566X6aG65bqP5piv5YWI5LmY6Zmk77yM5ZCO5Yqg5YeP77yM5pyJ5ous5Y+35YWI566X5ous5Y+36YeM6L6555qE
- 答案：RA==
6Kej562U77ya4oi1PGltZyB3aWR0aD0xMDEgaGVpZ2h0PTQyIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvM0UvRTcvckJBQ0oxVElsX1NoRjdFQkFBQUROdnc2ZkM0OTMzLnBuZyI+PTxpbWcgd2lkdGg9MTA0IGhlaWdodD00MiBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwL0FBLzI2L3JCQUNGRlRJbF9UeFY2TmxBQUFDUVZxMFFPdzE2My5wbmciPj08aW1nIHdpZHRoPTkzIGhlaWdodD00MiBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzczLzFEL3JCQUNFMVRJbF9UeXhjbVRBQUFDTEw5X1pCbzkyMC5wbmciPj08aW1nIHdpZHRoPTEwIGhlaWdodD00MiBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzNFL0E5L3JCQUNKbFRJbF9YeDN3VmFBQUFCZWx1WF95UTkyNC5wbmciPjxicj7mlYXpgIlE
本课配套习题挑战模式5/5
单选题
难度系数：
5.已知a2-6a+9+|b-1|=0，则
的值为( )
的值为( ) A: . |
B:  |
C:  |
D:  |
一次做对，真牛！
+5奖励规则>
- 提示1：5YiG5byP55qE5re35ZCI6L+Q566X6aG65bqP5piv5YWI5LmY6Zmk77yM5ZCO5Yqg5YeP77yM5pyJ5ous5Y+35YWI566X5ous5Y+36YeM6L6555qE
- 答案：QQ==
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
