a2 |
a2+2a |
a2-2a+1 |
a+2 |
a2-1 |
a+1 |
2 |
a•a |
a(a+2) |
(a-1)2 |
a+2 |
a+1 |
(a+1)(a-1) |
a |
a+2 |
a-1 |
a+2 |
a-(a-1) |
a+2 |
1 |
a+2 |
2 |
1 | ||
|
| ||
2 |
a |
a+2 |
2 |
a-2 |
1 |
a2-4 |
x-1 |
x |
1 |
x |
2 |
x-y |
x+3y |
x2-y2 |
x2+6xy+9y2 |
2y |
x+y |
3 |
2x |
x2-1 |
1 |
x+1 |
(x-2)3-(x-1)2+1 |
x-2 |
A.2010 | B.2011 | C.2012 | D.2013 |
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