章 122: She has proved it (third update) _1

Finished?

Principal Gu, who was talking to su Cheng, was taken aback. Then, he turned to Meng Fu seriously.

At the same time, su di handed half of Meng Fu's proof to the principal.

The principal did not major in mathematics. This Mathematical Olympiad book was brought to him by the head of the third year when he gave him some suggestions for revision.

When he saw the paper su di handed him, he was shocked. The words on it were very stylish, and each stroke had its own edge. It was obvious that it had been written with great effort.

The principal's expression softened when he saw the words. He even glanced at Meng Fu.

Then, he continued to read Meng Fu's writing. Meng Fu had written a bunch of numbers and symbols on it. The principal's major wasn't here, so he went back to his seat, picked up the book, and flipped to the original answer, comparing it with the answer.