a2-b2 |
a2+ab |
A.
| B.
| C.
| D.
|
a2-b2 |
a2+ab |
(a+b)(a-b) |
a(a+b) |
a-b |
a |
A.
| ||||
B.
| ||||
C.
| ||||
D.1-
|
1 |
6ab2 |
1 |
9a2bc |
a-1 |
a2+2a+1 |
6 |
a2-1 |
1 |
3-x |
6a2b |
8a3 |
| ||||
|
0.5x-1 |
0.3x+2 |
9a2(x+y) |
3a(x+y) |
9-x2 |
x2+5x+6 |
an+2-a2bn |
a2n+1-ab2n |
-(x+y)(x-y)2 |
(y+x)(y2-x2) |
a2+b2-c2+2ab |
a2-b2-c2-2bc |
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