b |
a |
a |
b |
a-1 |
a |
a |
a+2 |
1 |
a2+2a |
b2-a2 |
ab |
a-1 |
a |
(a+1)(a-1) |
a(a+2) |
a-1 |
a |
a(a+2) |
(a+1)(a-1) |
a+2 |
a+1 |
1 |
a+1 |
3 |
x+2 |
x2-1 |
x+2 |
x |
2 |
y |
3 |
z |
4 |
2x+y-z |
3x-2y+z |
2a-1 |
a |
1-a2 |
a2+a |
1 |
a-2 |
1 |
a+2 |
2 |
2-a |
3 |
a+1 |
a-2 |
a-3 |
a+2 |
a2-6a+9 |
a2-4 |
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