2x |
x-3 |
x |
x+3 |
x |
x2-9 |
2x(x+3)-x(x-3) |
(x+3)(x-3) |
x |
(x+3)(x-3) |
x(x+3) |
(x+3)(x-3) |
(x+3)(x-3) |
x |
x-3 |
3x2-6x |
5 |
x-2 |
x2+2x+1 |
x+2 |
x2-1 |
x-1 |
1 |
x+2 |
3x |
x-2 |
x |
x+2 |
2x |
x2-4 |
1 |
1-x |
1 |
x2 |
1 |
a |
1 |
b |
1 |
a-b |
a+b |
a |
a-b |
b |
A.7 | B.8 | C.9 | D.10 |
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