b |
a |
a |
b |
a |
ab2 |
b |
a2b |
1 |
a-b |
1 |
a+b |
1 |
m-2 |
x |
x-y |
x |
y |
m-15 |
m2-9 |
3 |
3+m |
b2-a2 |
ab |
a3-b3 |
a2b2 |
a+b+a-b |
(a-b)(a+b) |
2a |
(a-b)(a+b) |
(m-2)2+1 |
m-2 |
m2-4m+5 |
m-2 |
xy |
y(x-y) |
x(x-y) |
y(x-y) |
xy-x2+xy |
y(x-y) |
x(2y-x) |
y(x-y) |
m-15 |
(m+3)(m-3) |
3(m-3) |
(m+3)(m-3) |
m-15-3m+9 |
(m+3)(m-3) |
-2(m+3) |
(m+3)(m-3) |
2 |
3-m |
100 |
n=1 |
2012 |
n=1 |
1 |
n(n+1) |
2 |
x |
5 |
x2 |
a+1 |
a-1 |
a-1 |
a+1 |
x |
y |
y |
x |
x2+y2 |
xy |
2 |
x2-4 |
1 |
2x-4 |
1 |
1-x |
1 |
1+x |
1 |
1-x |
1 |
1+x |
2 |
1+x2 |
4 |
1+x4 |
7 |
3n |
p |
mn |
p2 |
x2+5x |
x-1 |
2x2+4x |
x2-x |
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