a377b39d16 2023-09-25 1: % MH-20210116
a377b39d16 2023-09-25 2:
a377b39d16 2023-09-25 3: # 原解
a377b39d16 2023-09-25 4:
a377b39d16 2023-09-25 5: ~~~
a377b39d16 2023-09-25 6: 1 * 5 = 5
a377b39d16 2023-09-25 7:
a377b39d16 2023-09-25 8: 2 * 4 = 8
a377b39d16 2023-09-25 9:
a377b39d16 2023-09-25 10: 3 * 3 = 9
a377b39d16 2023-09-25 11: ~~~
a377b39d16 2023-09-25 12:
a377b39d16 2023-09-25 13: # 扩展
a377b39d16 2023-09-25 14:
a377b39d16 2023-09-25 15: ~~~
a377b39d16 2023-09-25 16: 6 = 3 + 3 = 3 + 3 + 1 - 1 = 3 + 1 + 3 - 1 = (3 + 1) + (3 - 1)
a377b39d16 2023-09-25 17:
a377b39d16 2023-09-25 18: (3 + 1) * (3 - 1) = 3 * 3 + 3 * (-1) + 1 * 3 + 1 * (-1) = 3 * 3 + 1 * (-1) = 3 * 3 - 1 ^ 2 = 3 ^ 2 - 1 ^ 2
a377b39d16 2023-09-25 19:
a377b39d16 2023-09-25 20: 3 ^ 2 > 3 ^ 2 - 1 ^ 2
a377b39d16 2023-09-25 21: ~~~
a377b39d16 2023-09-25 22: