1 |
x+1 |
x |
x2-4 |
a-1 |
a |
2a-1 |
a |
x+2 |
x+1 |
(x+2)(x-2) |
x |
(x+2)2(x-2) |
x(x+1) |
(-4+2)2×(-4-2) |
-4×(-4+1) |
a-1 |
a |
a2-2a+1 |
a |
a-1 |
a |
a |
(a-1)2 |
1 |
a-1 |
1 |
y |
1 |
x |
1 |
x+2 |
1 |
2-x |
x |
x+2 |
4 |
x2-4 |
1 |
x+2 |
1 |
x-2 |
a+2 |
a2-2a |
8 |
4-a2 |
a-2 |
a |
a2-b2 |
a2b-ab2 |
a2+b2 |
2ab |
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