| ( | x | − | 199 | ) | ( | x | − | 200 | ) | + | 2022 | = | 0 |
| Left side of the equation = | x | ( | x | − | 200 | ) | − | 199 | ( | x | − | 200 | ) | + | 2022 |
| = | x | x | − | x | × | 200 | − | 199 | ( | x | − | 200 | ) | + | 2022 |
| = | x | x | − | 200 | x | − | 199 | x | + | 199 | × | 200 | + | 2022 |
| = | x | x | − | 200 | x | − | 199 | x | + | 39800 | + | 2022 |
| = | x | x | − | 399 | x | + | 41822 |
| x | x | − | 399 | x | + | 41822 | = | 0 |