4 |
x2-4 |
1 |
2-x |
4 |
(x-2)(x+2) |
1 |
(x-2) |
4 |
(x-2)(x+2) |
x+2 |
(x-2)(x+2) |
4-(x+2) |
(x-2)(x+2) |
2-x |
(x-2)(x+2) |
1 |
x+2 |
1 |
-3+2 |
x |
x+1 |
x+1 |
x2+3x+2 |
x2-2x |
x2-4 |
1 |
2 |
1 |
2 |
1 |
3 |
1 |
a |
a2-a-6 |
a-3 |
a+3 |
a2+a-6 |
1 |
a-2 |
a2-1 |
a2+a-2 |
a |
a+2 |
1 |
2×3 |
3-2 |
2×3 |
1 |
2 |
1 |
3 |
1 |
3×4 |
4-3 |
3×4 |
1 |
3 |
1 |
4 |
1 |
n×(n+1) |
1 |
n |
1 |
n+1 |
1 |
x |
1 |
x(x+1) |
1 |
(x+1)(x+2) |
1 |
(x+2)(x+3) |
1 |
(x+3)(x+4) |
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