x+5 |
(x+1)(x-3) |
A |
x+1 |
B |
x-3 |
A(x-3)+B(x+1) |
(x+1)(x-3) |
(A+B)x+(-3A+B) |
(x+1)(x-3) |
x+5 |
(x+1)(x-3) |
A |
x+1 |
B |
x-3 |
1 |
1+x |
1 |
1+1 |
1 |
2 |
1 |
1+2 |
1 |
3 |
1 |
2 |
1 |
2011 |
1 |
2012 |
b |
a-b |
a |
b-a |
4 |
x-2 |
1 |
x+1 |
2x+1 |
1-x2 |
x2-1 |
x2-2x+1 |
x2-2x |
x-2 |
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