12 |
x2-9 |
2 |
x+3 |
12+2(x-3) |
(x+3)(x-3) |
2x+6 |
(x+3)(x-3) |
2(x+3) |
(x+3)(x-3) |
2 |
x-3 |
2 |
x-3 |
x-1 |
3 |
3x+1 |
2 |
A.-7x+7 | B.-7x+11 | C.
| D.
|
1 |
x+1 |
1 |
x-1 |
A.
| B.-
| C.
| D.-
|
x |
x-2 |
2 |
2-x |
A.x-2 | B.1 | C.1-x | D.2-x |
x2 |
y-x |
y2 |
y-x |
A.-x-y | B.y-x | C.x-y | D.x+y |
x+1 |
x-1 |
x-1 |
x+1 |
A.1 | B.
| C.
| D.
|
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