x+y |
1+xy |
1 |
5 |
1 |
11 |
1 |
19 |
1 |
n2+3n+1 |
1 |
2 |
x1-x2 |
1-x1•x2 |
x1-x2 |
1-x1•x2 |
x1-x2 |
1-x1•x2 |
1 |
5 |
1 |
5 |
3-2 |
1+3×(-2) |
1 |
11 |
1 |
11 |
4-3 |
1+4×(-3) |
1 |
n2+3n+1 |
(n+2)-(n-1) |
1+(n+2)•[-(n+1))] |
1 |
5 |
1 |
11 |
1 |
19 |
1 |
n2+3n+1 |
1 |
5 |
1 |
11 |
1 |
19 |
1 |
n2+3n+1 |
n |
1-2(n+2) |
n |
1-2(n+2) |
n |
2n+3) |
n |
2n |
1 |
2 |
n |
2n |
1 |
2 |
1 |
5 |
1 |
11 |
1 |
19 |
1 |
n2+3n+1 |
1 |
2 |
|
1 |
2 |
|
x |
y |
1 |
2 |
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