1 |
xy |
1 |
(x+1)(y+1) |
1 |
(x+2)(y+2) |
1 |
(x+2010)(y+2010) |
1 |
1×2 |
1 |
2×3 |
1 |
2011×2012 |
1 |
2 |
1 |
2 |
1 |
3 |
1 |
2011 |
1 |
2012 |
1 |
2012 |
2011 |
2012 |
2011 |
2012 |
x+y-5 |
xy |
3 |
2 |
5 |
22 |
7 |
23 |
2×1993+1 |
21993 |
A.6-
| B.3-
| ||||
C.6-
| D.3-
|
S1+S2 |
2 |
1 |
4 |
A.a3•a4=a12 | B.(-y3)3=y9 |
C.(m3n)2=m5n2 | D.-2x2+6x2=4x2 |
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