| 1 |
| a+1 |
| 1 |
| b+1 |
m=
| a+b+2 |
| (a+1)(b+1) |
n=
| a |
| a+1 |
| b |
| b+1 |
n=
| a(b+1)+b(a+1) |
| (a+1)(b+1) |
=
| ab+a+b+1 |
| (a+1)(b+1) |
=
| a+b+2 |
| (a+1)(b+1) |
∴m=n
故选C
| 1 |
| a+1 |
| 1 |
| b+1 |
| a |
| a+1 |
| b |
| b+1 |
| 1 |
| a+1 |
| 1 |
| b+1 |
| a+b+2 |
| (a+1)(b+1) |
| a |
| a+1 |
| b |
| b+1 |
| a(b+1)+b(a+1) |
| (a+1)(b+1) |
| ab+a+b+1 |
| (a+1)(b+1) |
| a+b+2 |
| (a+1)(b+1) |