Watch the "Guo Huanan High School Mathematics Teaching Video" on Baidu HD resources for free online;

link:/s/ 1 efnn 0 dst-xhzis 8 tqrdq

Excerpt code: gnwq| ├── Video explanation of autumn class (end)

|||| exercises.mp4 * * 01inequality matching ├143.43m.

|||| ├ ─ * * 02. Arithmetic geometric series &; Series summation and recursion exercises mp4 636.09M