s | ( | 1 10 | s | + | 1 | ) | ( | 1 2 | s | + | 1 | ) | + | 1 | = | 0 |
Left side of the equation = | s | × | 1 10 | s | ( | 1 2 | s | + | 1 | ) | + | s | × | 1 | ( | 1 2 | s | + | 1 | ) | + | 1 |
= | s | × | 1 10 | s | × | 1 2 | s | + | s | × | 1 10 | s | × | 1 | + | s | × | 1 | ( | 1 2 | s | + | 1 | ) |
= | s | × | 1 20 | s | s | + | s | × | 1 10 | s | + | s | × | 1 | ( | 1 2 | s | + | 1 | ) | + | 1 |
= | s | × | 1 20 | s | s | + | s | × | 1 10 | s | + | s | × | 1 | × | 1 2 | s | + | s |
= | s | × | 1 20 | s | s | + | s | × | 1 10 | s | + | s | × | 1 2 | s | + | s | × | 1 |
s | × | 1 20 | s | s | + | s | × | 1 10 | s | + | s | × | 1 2 | s | + | 1 | s | = | 0 |