x2 |
x-1 |
4x2-4x+1 |
1-x |
x2-(x-1)(x-1) |
x-1 |
1-x |
(2x-1)2 |
2x-1 |
x-1 |
1-x |
(2x-1)2 |
1 |
1-2x |
1 |
1-2×(-2) |
1 |
5 |
x2-4 |
x2+2x |
x2+4 |
x |
5 |
x |
x-y |
y |
y-x |
xy |
x-y |
a+2 |
a2-2a+1 |
a2-4a+4 |
a+1 |
a2-4 |
a2-1 |
x |
y |
y |
x |
x2+y2 |
xy |
x |
y |
y |
x |
1 |
y |
1 |
x |
1+x |
y |
x-y |
x |
2a |
a2-4 |
1 |
a-2 |
2x |
x-3 |
x |
x+3 |
x2-9 |
x |
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