x2-1 |
x2+2x |
x-1 |
x |
|
x2-1 |
x2+2x |
x-1 |
x |
x2-1 |
x2+2x |
x |
x-1 |
(x-1)(x+1) |
x(x+2) |
x |
x-1 |
x+1 |
x+2 |
|
|
x+1 |
x+2 |
1 |
a |
1 |
b |
3ab |
2a+3ab+2b |
A.
| B.
| C.
| D.
|
A.1 | B.2 | C.5 | D.6 |
x2 |
x+3 |
9 |
x+3 |
x-3 |
2x |
3 |
2 |
7a |
3(a-4) |
4a |
3(4-a) |
x2 |
x-1 |
12 |
m2-9 |
2 |
3-m |
1 |
m+3 |
x2 |
y-x |
y2 |
y-x |
a2 |
a+1 |
x+2 |
x2-2x |
x-1 |
x2-4•x+4 |
x |
4-x |
1 |
2 |
8 |
3 |
a2-1 |
a |
2a-1 |
a |
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