3 |
a-2 |
12 |
a2-4 |
3 |
a-2 |
12 |
(a+2)(a-2) |
3(a+2)-12 |
(a+2)(a-2) |
3a-6 |
(a+2)(a-2) |
3 |
a+2 |
3 |
a+2 |
3 |
1+2 |
x |
x-2 |
x |
x+2 |
4x |
x-2 |
1 |
x+2 |
x2+2x+1 |
x+2 |
x2-1 |
x-1 |
2 |
x2-1 |
x2-2x+1 |
x2-2x |
x2-3x+2 |
1 | ||
|
x+1 |
x2+x-2 |
3 |
x+2 |
a |
a-2 |
a |
a+3 |
a2+a-6 |
a |
A.1 | B.5 | C.2a+1 | D.2a+5 |
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