a | ( | 1 | + | a | ) | ( | 1 | + | 1 25 | a | ) | = | 1 |
Left side of the equation = | a | × | 1 | ( | 1 | + | 1 25 | a | ) | + | a | a | ( | 1 | + | 1 25 | a | ) |
= | a | × | 1 | × | 1 | + | a | × | 1 | × | 1 25 | a | + | a | a | ( | 1 | + | 1 25 | a | ) |
= | a | × | 1 | + | a | × | 1 25 | a | + | a | a | ( | 1 | + | 1 25 | a | ) |
= | 1 | a | + | a | × | 1 25 | a | + | a | a | × | 1 | + | a | a | × | 1 25 | a |
1 | a | + | a | × | 1 25 | a | + | a | a | × | 1 | + | a | a | × | 1 25 | a | = | 1 |