36ab3c |
6abc2 |
ma+mb-mc |
a+b-c |
36ab3c |
6abc2 |
6abc•6b2 |
6abc•c |
6b2 |
c |
ma+mb-mc |
a+b-c |
m(a+b-c) |
a+b-c |
| ||||
|
A.10 | B.9 | C.45 | D.90 |
1 |
a |
1 |
b |
2a+3ab-2b |
a-ab-b |
-3y |
2x |
-2a |
3b |
x |
-2y |
-a+b |
-a-b |
1 |
-x+y |
1 |
a |
1 |
b |
a-2ab-b |
2a-2b+7ab |
A.6 | B.-6 | C.
| D.-
|
x+y |
x-y |
A.不变 | B.是原来的100倍 | ||
C.是原来的200倍 | D.是原来的
|
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