2b2 |
a+b |
A.
| B.a+b | C.
| D.a-b |
2b2 |
a+b |
a2-b2+2b2 |
a+b |
a2+b2 |
a+b |
c |
2ab |
b |
3a2c |
12 |
m2-9 |
2 |
3-m |
12 |
m2-9 |
2 |
3-m |
12 |
(m+3)(m-3) |
2 |
m-3 |
12 |
(m+3)(m-3) |
2(m+3) |
(m-3)(m+3) |
12-2(m+3) |
(m+3)(m-3) |
-2m+6 |
(m+3)(m-3) |
2 |
(m+3) |
3 |
2a-4 |
4 |
a2-4 |
1 |
a |
1 |
a |
2 |
a |
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