a2-b2 |
a-b |
a2+b2 |
ab |
n |
m |
n |
m |
(a+b)(a-b) |
a-b |
ab |
(a+b)2 |
ab |
a+b |
m+n |
m |
m |
m-n |
ab |
a+b |
1 |
a+1 |
a+3 |
a2-1 |
a2-2a+1 |
(a+1)(a-3) |
x2+y2 |
x-y |
2xy |
x-y |
1 |
x |
1 |
y |
2x2 |
3y2 |
5y |
7x |
10y |
21x2 |
x-1 |
x+1 |
x+1 |
x+2 |
x+3 |
x2+4x+4 |
1 |
2x-1 |
x |
1-2x |
1-2x+x2 |
1-2x |
a2-1 |
a2-5a+6 |
a2+a-2 |
a-3 |
a+3 |
a2-4 |
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