1 |
x-2 |
x2-2x+1 |
x2-4 |
1 |
x-2 |
x2-2x+1 |
x2-4 |
x-2+1 |
x-2 |
(x-1)2 |
(x+2)(x-2) |
x-1 |
x-2 |
(x+2)(x-2) |
(x-1)2 |
x+2 |
x-1 |
x+2 |
x-1 |
-5+2 |
-5-1 |
1 |
2 |
3a |
a+1 |
a |
a+1 |
a2-1 |
a |
7 |
2x |
x+y |
4x |
y-x |
8x |
x2-y2 |
A.
| B.-
| C.-
| D.
|
a-1 |
a+2 |
a2-4 |
a2-2a+1 |
1 |
a2-1 |
x2-y2 |
x |
2xy-y2 |
x |
1 | ||
2+
|
27 |
|
3 |
a-1 |
a |
2a-1 |
a |
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