| ( | 1273 1000 | x | + | 693 500 | ) | ( | 1711 10 | x | + | 3843 5000 | ) | − | 1711 10 | ( | 6363 10000 | x | x | + | 693 500 | x | + | 1509 200000 | ) | = | 0 |
| Left side of the equation = | 1273 1000 | x | ( | 1711 10 | x | + | 3843 5000 | ) | + | 693 500 | ( | 1711 10 | x | + | 3843 5000 | ) | − | 1711 10 | ( | 6363 10000 | x | x | + | 693 500 | x | + | 1509 200000 | ) |
| = | 1273 1000 | x | × | 1711 10 | x | + | 1273 1000 | x | × | 3843 5000 | + | 693 500 | ( | 1711 10 | x | + | 3843 5000 | ) | − | 1711 10 | ( | 6363 10000 | x | x | + | 693 500 | x | + | 1509 200000 | ) |
| = | 2178103 10000 | x | x | + | 4892139 5000000 | x | + | 693 500 | ( | 1711 10 | x | + | 3843 5000 | ) | − | 1711 10 | ( | 6363 10000 | x | x | + | 693 500 | x | + | 1509 200000 | ) |
| = | 2178103 10000 | x | x | + | 4892139 5000000 | x | + | 693 500 | × | 1711 10 | x | + | 693 500 | × | 3843 5000 | − | 1711 10 | ( | 6363 10000 | x | x | + | 693 500 | x | + | 1509 200000 | ) |
| = | 2178103 10000 | x | x | + | 4892139 5000000 | x | + | 1185723 5000 | x | + | 2663199 2500000 | − | 1711 10 | ( | 6363 10000 | x | x | + | 693 500 | x | + | 1509 200000 | ) |