A.
| ||||
B.
| ||||
C.
| ||||
D.
|
1 |
a(x-y) |
1 |
b(y-x) |
1 |
a2-2a+1 |
1 |
a2-1 |
1 |
a2+2a+1 |
A.(a2+1)2 | B.(a+1)(a-1)(a2+1) | C.(a+1)2(a-1)2 | D.(a-1)4 |
1 |
a+b |
2a |
a2-b2 |
b |
b-a |
A.(a2-b2)(a+b)(a-b) | B.(a2-b2)(a+b) |
C.(a2-b2)(b-a) | D.a2-b2 |
m+2 |
m-1 |
5 |
m+2 |
3 |
x2-4 |
4 |
(x-2)2 |
5y |
x+2 |
x+3 |
x2-1 |
x2+6x+9 |
x2-2x+1 |
1 |
x+1 |
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