| ( | x | − | 2022 | ) | ( | x | − | 2022 | ) | + | ( | x | − | 2020 | ) | ( | x | − | 2020 | ) | = | 2000 |
| 方程左边 = | x | ( | x | − | 2022 | ) | − | 2022 | ( | x | − | 2022 | ) | + | ( | x | − | 2020 | ) | ( | x | − | 2020 | ) |
| = | x | x | − | x | × | 2022 | − | 2022 | ( | x | − | 2022 | ) | + | ( | x | − | 2020 | ) | ( | x | − | 2020 | ) |
| = | x | x | − | 2022 | x | − | 2022 | x | + | 2022 | × | 2022 | + | ( | x | − | 2020 | ) | ( | x | − | 2020 | ) |
| = | x | x | − | 2022 | x | − | 2022 | x | + | 4088484 | + | ( | x | − | 2020 | ) | ( | x | − | 2020 | ) |
| = | x | x | − | 4044 | x | + | 4088484 | + | ( | x | − | 2020 | ) | ( | x | − | 2020 | ) |
| = | x | x | − | 4044 | x | + | 4088484 | + | x | ( | x | − | 2020 | ) | − | 2020 | ( | x | − | 2020 | ) |
| = | x | x | − | 4044 | x | + | 4088484 | + | x | x | − | x | × | 2020 | − | 2020 | ( | x | − | 2020 | ) |
| = | x | x | − | 6064 | x | + | 4088484 | + | x | x | − | 2020 | ( | x | − | 2020 | ) |
| = | x | x | − | 6064 | x | + | 4088484 | + | x | x | − | 2020 | x | + | 2020 | × | 2020 |
| = | x | x | − | 6064 | x | + | 4088484 | + | x | x | − | 2020 | x | + | 4080400 |
| = | x | x | − | 8084 | x | + | 8168884 | + | x | x |
| x | x | − | 8084 | x | + | 8168884 | + | x | x | = | 2000 |