| 20062+4×2006+4 |
| 20063+20062×2−2006×4−8 |
=
| (2006+2)2 |
| 20062(2006+2)−4(2006+2) |
=
| (2006+2)2 |
| 2008(20062−4) |
=
| 20082 |
| 2008×(2006+2)(2006−2) |
=
| 1 |
| 2004 |
| 20062+4×2006+4 |
| 20063+20062×2−2006×4−8 |
| 20062+4×2006+4 |
| 20063+20062×2−2006×4−8 |
| (2006+2)2 |
| 20062(2006+2)−4(2006+2) |
| (2006+2)2 |
| 2008(20062−4) |
| 20082 |
| 2008×(2006+2)(2006−2) |
| 1 |
| 2004 |