A.
| B.
| ||||||
C.
| D.2ab÷
|
1 |
a+b |
1 |
(a+b)2 |
a2-1 |
a2-a |
(a-1)(a+1) |
a(a-1) |
a+1 |
a |
a2-1 |
a |
a2+a |
a2 |
(a-1)(a+1) |
a |
a2 |
a(a+1) |
3b3 |
2a |
2a |
3b3 |
4a2 |
3b2 |
A.(
| B.
| ||||||||
C.
| D.(
|
x2+6x |
x2+2x |
x2-4 |
x2+4x+4 |
x |
y |
x2 |
y3 |
x |
y |
3a-3b |
15ab |
10ab2 |
a2-b2 |
1 |
2 |
1 |
4 |
1 |
8 |
1 |
16 |
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