-2ac2 |
14a2bc |
1 |
x-2 |
1 |
x+2 |
-2ac2 |
14a2bc |
c |
7ab |
1 |
x-2 |
1 |
x+2 |
x+2-(x-2) |
(x+2)(x-2) |
4 |
x2-4 |
1 |
a |
1 |
b |
x2-5 |
x-2 |
x |
x-2 |
1+x |
2-x |
1 |
a-1 |
2 |
1-a2 |
a-1 |
a2-1 |
a |
a+1 |
a |
a-b |
b |
a-b |
A.a+b | B.a-b | C.a2-b2 | D.1 |
2a+b |
a2-b2 |
b |
b2-a2 |
2b |
(a+b)(a-b) |
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