A.x+x2=x3 | B.x2+x2=2x4 | C.x2•x2=x4 | D.(x2)3=x5 |
3x+4 |
A.4 | B.-4 | C.
| D.-
|
A.(-1)4×(-1)3=1 | B.-(-3)3=9 | C.|-a| | D.-3÷(-
|
A.M>N | B.M<N | C.M≥N | D.M≤N |
A.(-7)4×(-7)3=(-7)12 | B.(-7)4×(-7)3=(-7)7 |
C.(-7)4×(-7)3=712 | D.(-7)4×(-7)3=77 |
© 2017-2019 超级试练试题库,All Rights Reserved.