1 |
1-a |
1 |
1-2 |
1 |
1-(-1) |
1 |
2 |
a | 1 |
a | 2 |
a | 2 |
1 |
1-3 |
1 |
2 |
1 | ||
1+
|
2 |
3 |
1 | ||
1-
|
1 |
1-3 |
1 |
2 |
2 |
3 |
1 |
2 |
1 |
2 |
| ||
c |
A.1 | B.-
| C.2 | D.-1 |
1 |
x-1 |
1 |
x2-2x+1 |
x-2 |
x2-1 |
1 |
3 |
1 |
2 |
1 |
3 |
|2a+4b| |
(a+2b)2 |
4 |
|a+2b| |
2 |
|4b+3|-|2a-3| |
1 |
2x |
A.2 | B.-2 | C.1 | D.-1 |
a2+b2 |
a2-b2 |
a-b |
a+b |
2ab |
(a-b)(a+b)2 |
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