A.
| ||||||
B.
| ||||||
C.
| ||||||
D.
|
b-a |
ab |
y-y+1 |
x |
1 |
x |
x-y |
(x+y)(x-y) |
1 |
x+y |
a |
x-y |
b-a |
x-y |
a+b-a |
x-y |
b |
x-y |
a |
(a-b)(a-c) |
b |
(b-c)(b-a) |
c |
(c-a)(c-b) |
A.a | B.b | C.1 | D.0 |
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 |
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