1 |
2 |
3 | -27 |
-a |
b |
2a2 |
5b |
a |
5b |
m+2n |
n-m |
n |
m-n |
2n |
n-m |
x |
x-y |
2y |
x-y |
xy |
x-2y |
1 |
x |
1 |
y |
a2 |
b2 |
4a4 |
25b2 |
a |
5b |
a2 |
b2 |
25b2 |
4a2 |
a |
5b |
5a |
4b |
m+2n |
n-m |
n |
n-m |
2n |
n-m |
m+2n-n-2n |
n-m |
m-n |
n-m |
x-2y |
x-y |
xy |
x-2y |
x+y |
xy |
x-2y |
x-y |
xy |
x-2y |
xy |
x+y |
x2y2 |
x2-y2 |
A.-1 | B.1 | C.0 | D.2 |
3 |
12 |
2 |
3 |
9x |
|
|
1 |
2 |
3 |
2 |
4 | ||
|
2 |
1 |
27 |
A.-6 | B.-8 | C.-
| D.
|
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