\(x+y+xy=226\)
\(\Leftrightarrow x\left(y+1\right)+\left(y+1\right)=227\)
\(\Leftrightarrow\left(y+1\right)\left(x+1\right)=227\)
Ta có bảng
x+1 | 1 | 227 | -1 | -227 |
y+1 | 227 | 1 | -227 | -1 |
x | 0 | 226 | -2 | -228 |
y | 226 | 0 | -228 | -2 |
Vậy........................