x-1 |
x2+x |
1-x |
x3-x |
x-1 |
x(x+1) |
x-1 |
x(x+1)(x-1) |
x-1 |
x |
1 |
x |
A.3a+2b=5ab | B.
| C.(
| D.
|
2a |
a2-4 |
1 |
2-a |
1 |
2 |
a+2b |
a+b |
2b2 |
a2-b2 |
2ab |
a2-b2 |
1 |
3 |
a2-b2 |
a2-ab |
2ab+b2 |
a |
1 |
x+1 |
x2-2x+1 |
x2-1 |
x-1 |
x+1 |
2 |
4-x2 |
x2+4x+4 |
x2-2x |
2x+4 |
2 |
x2+x |
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