2 |
a |
3 |
a |
b |
a |
c |
b |
3b |
2a |
1 |
x |
1 |
y |
2a |
a-b |
a+b |
b-a |
x2-1 |
(x+1)2 |
() |
x+1 |
a2 |
a+3 |
9 |
a+3 |
a |
a-b |
b |
b-a |
2 |
a |
3 |
a |
5 |
a |
b |
a |
c |
b |
b2-ac |
ab |
3b |
2a |
9b2 |
4a2 |
1 |
x |
1 |
y |
y-x |
xy |
2a |
a-b |
a+b |
b-a |
2a-a-b |
a-b |
a-b |
a-b |
x2-1 |
(x+1)2 |
(x+1)(x-1) |
(x+1)2 |
x-1 |
x+1 |
a2 |
a+3 |
9 |
a+3 |
a2-9 |
a+3 |
(a+3)(a-3) |
a+3 |
a |
a-b |
b |
b-a |
a |
a-b |
b |
a-b |
a-b |
a-b |
5 |
a |
b2-ac |
ab |
9b2 |
4a2 |
y-x |
xy |
x-1 |
x+1 |
1 |
a+1 |
1 |
a-1 |
2a |
a2-2a+1 |
x2+4 |
x |
x2-4 |
x2+2x |
a |
b+1 |
2a |
b+1 |
3a |
1+b |
x2+1 |
x-3 |
x2-9 |
x3+x |
a2-4a+4 |
a2-2a+1 |
a-1 |
a2-4 |
2a |
b |
1 |
a-b |
a |
b |
b |
4 |
b |
a+2b |
a2+2ab+b2 |
a2-4b2 |
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