xy |
x+y |
yz |
y+z |
zx |
z+x |
xy |
x+y |
yz |
y+z |
xz |
z+x |
x+y |
xy |
1 |
y |
1 |
x |
y+z |
yz |
1 |
2 |
1 |
y |
1 |
z |
1 |
2 |
x+z |
xz |
1 |
3 |
1 |
x |
1 |
z |
1 |
3 |
1 |
y |
1 |
x |
1 |
6 |
2 |
x |
5 |
6 |
12 |
5 |
12 |
5 |
1 |
y |
1 |
z |
1 |
x |
a-b |
a+2b |
a2-b2 |
a2+4ab+4b2 |
1 |
4 |
1 |
m |
1 |
m |
ab |
a+b |
1 |
3 |
bc |
b+c |
1 |
4 |
ac |
a+c |
1 |
5 |
1 |
a |
1 |
b |
1 |
c |
(-m)3×(-1)4-|-12|÷[-(-
| ||
-m2×(-
|
A.-2 | B.-1 | C.1 | D.2 |
© 2017-2019 超级试练试题库,All Rights Reserved.