接する場合に，解の個数が変化することを発見させましょう．
- Resource Type
-
Activity
- Tags
-
2次式 解の個数
- Target Group (Age)
- 15 – 18
- Language
- Japanese / 日本語
Error
A timeout occurred. Trying to re-save …
Sorry, but the server is not responding. Please wait a few minutes and then try to save again.
