3x |
x-2 |
x |
x+2 |
x |
x2-4 |
3x |
x-2 |
x |
x+2 |
x |
x2-4 |
3x(x+2)-x(x-2) |
(x+2)(x-2) |
x |
(x+2)(x-2) |
2x(x+4) |
(x+2)(x-2) |
(x+2)(x-2) |
x |
1 |
x |
1 |
y |
A.
| B.2 | C.-
| D.-2 |
a2+2a+1 |
a2-1 |
1 |
a-1 |
2 |
x2 |
x-y |
y2 |
x-y |
2a |
a2-4 |
1 |
2-a |
a2 |
b |
b2 |
a |
b |
a |
3-x |
2x-4 |
5 |
x-2 |
x |
x-y |
2y |
x-y |
xy |
x-2y |
1 |
x |
1 |
y |
xy |
x2-y2 |
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