A.8a2÷
| B.(a-b)÷
| ||||||
C.(a-b)÷
| D.15a2÷
|
2 |
b2 |
16a2 |
b2 |
b |
3a |
x2-2xy+y2 |
xy |
x-y |
x2 |
a-1 |
a-2 |
a2-2a+1 |
2a-4 |
ab3 |
2c3 |
-5a2b2 |
4cd |
x2-4y2 |
x2+2xy+y2 |
x+2y |
2x2+2xy |
a |
y |
x |
b |
n |
m |
2m |
n |
4 |
x |
2 |
x |
a |
b2 |
2a2 |
b2 |
A.①③ | B.①④ | C.②④ | D.③④ |
2x2y |
3mn2 |
5m2n |
4xy2 |
5xym |
3n |
a2 |
-b |
c2 |
-ab |
bc |
a |
2x |
3y |
3y |
4x |
a-b |
ab |
ab |
b-a |
2a |
b2 |
b2 |
4a4 |
a |
b |
b2 |
a |
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