x+1 |
2x |
4x2 |
x2-1 |
a |
a-1 |
a |
a+1 |
2a |
a-1 |
x+1 |
2x |
4x2 |
(x+1)(x-1) |
2x |
x-1 |
2×2 |
2-1 |
a(a+1)-a(a-1) |
(a+1)(a-1) |
2a |
a-1 |
2a |
(a+1)(a-1) |
a-1 |
2a |
1 |
a+1 |
1 |
2+1 |
1 |
3 |
a |
b |
a2-ab+b2 |
a2+b2 |
3x |
x-2 |
x |
x+2 |
2x |
x2-4 |
x |
x+y |
2y |
x+y |
xy |
x+2y |
1 |
x |
1 |
y |
1 |
2 |
a-b |
a+b |
a2+b2 |
a2-b2 |
a+b |
ab |
a2b+ab2 |
a2+b2 |
1 |
2 |
1 |
2 |
1 |
3 |
1 |
3 |
1 |
4 |
1 |
4 |
1 |
5 |
1 |
n |
1 |
n+1 |
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