1 |
6ab2 |
1 |
9a2bc |
a-1 |
a2+2a+1 |
6 |
a2-1 |
1 |
6ab2 |
3ac |
18a2b2c |
1 |
9a2bc |
2b |
18a2b2c |
a-1 |
a2+2a+1 |
(a-1)2 |
(a+1)2(a-1) |
6 |
a2-1 |
6(a+1) |
(a+1)2(a-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 |
x+y |
x-2y |
A.扩大3倍 | B.不变 | C.缩小3倍 | D.扩大6倍 |
y |
x |
() |
x2 |
a+b |
ab |
() |
a2b |
x2+xy |
x2 |
x+y |
() |
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