| ( | x | + | 700 | × | 3 4 | ) | ( | 3 4 | x | + | 700 | ) | = | 875 | × | 875 |
| Left side of the equation = | x | ( | 3 4 | x | + | 700 | ) | + | 700 | × | 3 4 | ( | 3 4 | x | + | 700 | ) |
| = | x | ( | 3 4 | x | + | 700 | ) | + | 525 | ( | 3 4 | x | + | 700 | ) |
| = | x | × | 3 4 | x | + | x | × | 700 | + | 525 | ( | 3 4 | x | + | 700 | ) |
| = | x | × | 3 4 | x | + | 700 | x | + | 525 | × | 3 4 | x | + | 525 | × | 700 |
| = | x | × | 3 4 | x | + | 700 | x | + | 1575 4 | x | + | 367500 |
| = | x | × | 3 4 | x | + | 4375 4 | x | + | 367500 |
| x | × | 3 4 | x | + | 4375 4 | x | + | 367500 | = | 875 | × | 875 |
| Right side of the equation = | 765625 |
| x | × | 3 4 | x | + | 4375 4 | x | + | 367500 | = | 765625 |