12 |
x+2 |
4-x |
x+2 |
x2-4-12 |
x+2 |
x+2 |
4-x |
(x+4)(x-4) |
x+2 |
x+2 |
x-4 |
x-2 |
x2-1 |
2x+2 |
x2+2x+1 |
1 |
x-1 |
a2-4 |
a2-4a+4 |
1 |
2-a |
2 |
a2-2a |
x+1 |
x-1 |
x-1+2 |
x-1 |
x-1 |
x-1 |
2 |
x-1 |
2 |
x-1 |
x+2 |
x2-1 |
a+1 |
a-1 |
y2 |
y-1 |
b2+1 |
b2-1 |
t2+1 |
t+1 |
x-2 |
x2-1 |
2x+2 |
x2+2x+1 |
1 |
x-1 |
1 |
a |
1 |
b |
1 |
2 |
ab |
a-b |
A.
| B.-
| C.2 | D.-2 |
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