| ( | 141 10 | x | ) | ( | 141 10 | x | ) | + | 100 | x | × | 100 | x | = | 77 4 | × | 77 4 |
| Left side of the equation = | ( | 141 10 | x | ) | ( | 141 10 | x | ) | + | 10000 | x | x |
| ( | 141 10 | x | ) | ( | 141 10 | x | ) | + | 10000 | x | x | = | 77 4 | × | 77 4 |
| Left side of the equation = | 141 10 | x | ( | 141 10 | x | ) | + | 10000 | x | x |
| = | 141 10 | x | × | 141 10 | x | + | 10000 | x | x |
| = | 19881 100 | x | x | + | 10000 | x | x |
19881 100 | x | x | + | 10000 | x | x | = | 77 4 | × | 77 4 |
| Right side of the equation = | 5929 16 |
19881 100 | x | x | + | 10000 | x | x | = | 5929 16 |