2 | x | ( | x | − | 10 | ) | ( | x | − | 10 | ) | + | 15 2 | = | 0 |
Left side of the equation = | 2 | x | x | ( | x | − | 10 | ) | − | 2 | x | × | 10 | ( | x | − | 10 | ) | + | 15 2 |
= | 2 | x | x | ( | x | − | 10 | ) | − | 20 | x | ( | x | − | 10 | ) | + | 15 2 |
= | 2 | x | x | x | − | 2 | x | x | × | 10 | − | 20 | x | ( | x | − | 10 | ) | + | 15 2 |
= | 2 | x | x | x | − | 20 | x | x | − | 20 | x | ( | x | − | 10 | ) | + | 15 2 |
= | 2 | x | x | x | − | 20 | x | x | − | 20 | x | x | + | 20 | x |
= | 2 | x | x | x | − | 20 | x | x | − | 20 | x | x | + | 200 | x |
2 | x | x | x | − | 20 | x | x | − | 20 | x | x | + | 200 | x | = | 0 |