3x+2 |
x2-1 |
x |
x+1 |
3x+2 |
(x+1)(x-1) |
x(x-1) |
(x+1)(x-1) |
3x+2+x2-x |
(x+1)(x-1) |
2x+2+x2 |
(x+1)(x-1) |
(x+1)2+1 |
(x+1)(x-1) |
3 |
(1+
| ||||
(1+
|
(2+
| ||||
(2+
|
4+3+4
| ||
2
|
4(2+
| ||
2
|
4
| ||
3 |
y+1 |
x+1 |
x+1 |
y+1 |
1 |
x2 |
x2-2x |
x2-4 |
2x-4 |
x+2 |
x-1 |
x2+x |
1-x |
x3-x |
A.3a+2b=5ab | B.
| C.(
| D.
|
2a |
a2-4 |
1 |
2-a |
1 |
2 |
a+2b |
a+b |
2b2 |
a2-b2 |
2ab |
a2-b2 |
1 |
3 |
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