a |
1+a |
b |
1+b |
a+b |
1+a+b |
a |
1+a |
b |
1+b |
a+b |
1+a+b |
a |
1+a+b |
b |
1+a+b |
a |
1+a |
a |
1+a+b |
b |
1+a+b |
b |
1+b |
a(1+a+b-1-a) |
(1+a)(1+a+b) |
b(1+b-1-a-b) |
(1+a+b)(1+b) |
ab |
1+a |
ab |
1+b |
x |
y+z |
y |
z+x |
z |
x+y |
x2 |
y+z |
y2 |
z+x |
z2 |
x+y |
a |
bc |
b |
ac |
c |
ab |
1 |
a |
1 |
b |
1 |
c |
A.ks | B.s-sk | C.
| D.
|
x |
y |
y |
z |
x-z |
y+z |
A.先涨价m%,再降价n% | ||||
B.先涨价n%,再降价m% | ||||
C.先涨价
| ||||
D.先涨价
|
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