2 |
x+3 |
2 |
3-x |
2x+18 |
x2-9 |
2(x-3)-2(x+3)+2x+18 |
(x+3)(x-3) |
2(x+3) |
(x+3)(x-3) |
2 |
x-3 |
2 |
x+3 |
2 |
3-x |
2x+18 |
x2-9 |
2 |
1-3 |
2 |
2-3 |
2 |
4-3 |
2 |
5-3 |
1 |
a |
1 |
b |
2a+b |
2ab |
x |
x-3 |
x+6 |
x2-3x |
1 |
x |
1 |
a-1 |
a |
a-1 |
A.
| B.-
| C.-1 | D.2 |
2a |
a2-4 |
1 |
2-a |
a+1 |
a-1 |
a2+a |
a2-1 |
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