a |
(a-b)(a-c) |
b |
(b-c)(b-a) |
c |
(c-a)(c-b) |
A.a | B.b | C.1 | D.0 |
a |
(a-b)(a-c) |
b |
(a-b)(b-c) |
c |
(a-c)(b-c) |
a(b-c)-b(a-c)+c(a-b) |
(a-b)(b-c)(a-c) |
ab-ac-ab+bc+ac-bc |
(a-b)(b-c)(a-c) |
0 |
(a-b)(b-c)(a-c) |
5 |
x-1 |
b |
a-b |
-a+2b |
a-b |
x+3y |
x2-y2 |
x+2y |
x2-y2 |
2x-3y |
x2-y2 |
x+3 |
(x-2)2 |
A |
x-2 |
B |
(x-2)2 |
3 |
1+a |
6 |
1-a |
12 |
a2-1 |
3x-4 |
x2-3x+2 |
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