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.下列多项式中，能用公式法进行因式分解的是（ ）
A:  |
B:  |
C:  |
D:  |
一次做对，真牛！
+5奖励规则>
- 提示1：5a6M5YWo5bmz5pa55YWs5byP6L+b6KGM5Zug5byP5YiG6Kej77yMPGltZyB3aWR0aD0xMDYgaGVpZ2h0PTQyIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvNzMvMUIvckJBQ0UxVElsbGZ5MnJkekFBQUNkZTdkMm80NzY4LnBuZyI+PTxpbWcgd2lkdGg9NjggaGVpZ2h0PTQyIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvQUEvMjMvckJBQ0ZGVElsbGZpTDNmc0FBQUNKeFVxa2JBMDMxLnBuZyI+
- 答案：Qg==
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
本课配套习题挑战模式2/5
单选题
难度系数：
2.下列各式中，能用平方差公式分解因式的是（）
A: |
B: |
C:  |
D:  |
一次做对，真牛！
+5奖励规则>
- 提示1：5bmz5pa55beu5YWs5byP6L+b6KGM5Zug5byP5YiG6KejPGltZyB3aWR0aD0yMDMgaGVpZ2h0PTQyIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvM0UvQTgvckJBQ0psVElsbC13cUdzekFBQUNfbWdBS3B3MDQ2LnBuZyI+
- 答案：QQ==
6Kej562U77ya4oi1QS4gPGltZyB3aWR0aD01NyBoZWlnaHQ9MjAgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC8zRS9FNi9yQkFDSjFUSWxsX0NlSWluQUFBQnpaYzVmMEk5OTMucG5nIj49PGltZyB3aWR0aD0yNjcgaGVpZ2h0PTQyIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvQUEvMjMvckJBQ0ZGVElsbC1SUmw1cEFBQURxUUhtY2Y0OTAxLnBuZyI+PGJyPuaVhemAiUE=
本课配套习题挑战模式3/5
单选题
难度系数：
3.下列多项式不能用完全平方公式分解的是（ ）
A:  a2+ ab＋b2 |
| B: a2－6a＋36 |
| C: －4x2+12xy－9y2 |
D: x2+x＋ |
一次做对，真牛！
+5奖励规则>
- 提示1：5a6M5YWo5bmz5pa55YWs5byP6L+b6KGM5Zug5byP5YiG6Kej77yMPGltZyB3aWR0aD0xMDYgaGVpZ2h0PTQyIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvNzMvMUIvckJBQ0UxVElsbGZ5MnJkekFBQUNkZTdkMm80NzY4LnBuZyI+PTxpbWcgd2lkdGg9NjggaGVpZ2h0PTQyIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvQUEvMjMvckJBQ0ZGVElsbGZpTDNmc0FBQUNKeFVxa2JBMDMxLnBuZyI+
- 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.
的结果为（ ）
的结果为（ ） A:  |
B:  |
C:  |
D:  |
一次做对，真牛！
+5奖励规则>
- 提示1：5bmz5pa55beu5YWs5byP6L+b6KGM5Zug5byP5YiG6KejPGltZyB3aWR0aD0yMDMgaGVpZ2h0PTQyIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvM0UvQTgvckJBQ0psVElsbC13cUdzekFBQUNfbWdBS3B3MDQ2LnBuZyI+
- 答案：Qw==
6Kej562U77ya4oi1PGltZyB3aWR0aD00MCBoZWlnaHQ9MjIgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC8zRS9FNi9yQkFDSjFUSWxtS0RiR0g1QUFBQmRjRkI5TjA1ODUucG5nIj48Yj49PGltZyB3aWR0aD05NiBoZWlnaHQ9MjUgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC83My8xQi9yQkFDRTFUSWxtTHhfRXV6QUFBQ2NqclItX0EyNTcucG5nIj49PGltZyB3aWR0aD0xMjggaGVpZ2h0PTI1IHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvQUEvMjMvckJBQ0ZGVElsbUtpWldYVEFBQUN5eWVZSGZvMTExLnBuZyI+PC9iPjxicj48Yj7mlYXpgIk8L2I+PGI+QzwvYj4=
本课配套习题挑战模式5/5
单选题
难度系数：
5.已知x2－y2=－1 ， x+y=
，则x－y=（）
，则x－y=（） | A: 2 |
B: 2 |
| C: 1 |
| D:1 |
一次做对，真牛！
+5奖励规则>
- 提示1：5bmz5pa55beu5YWs5byP6L+b6KGM5Zug5byP5YiG6KejPGltZyB3aWR0aD0yMDMgaGVpZ2h0PTQyIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvM0UvQTgvckJBQ0psVElsbC13cUdzekFBQUNfbWdBS3B3MDQ2LnBuZyI+
- 答案：Qg==
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
