2 |
x |
A.(2,1) | B.(2,-1) | C.(2,4) | D.(-
|
2 |
x |
k |
x |
A.3 | B.-1 | C.0 | D.-3 |
m2+2m-1 |
x |
A.(2,6) | B.(2,-6) | C.(4,-3) | D.(3,-4) |
6 |
x |
A.(1,-6) | B.(2,4) | C.(3,-2) | D.(2,3) |
k2 |
x |
A.k1与k2互为倒数 | B.k1与k2同号 |
C.k1与k2互为相反数 | D.k1与k2异号 |
k |
x |
A.10 | B.-10 | C.-7 | D.7 |
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