A.x3•xn+2x•xn•x2=2xn+3 | B.3xy•(2x2z)2=12x5yz2 | ||
C.x3•x4+x2•x6=2x12 | D.(-2xy2)2•(-
|
1 |
2 |
1 |
2 |
A.a3•a2=a6 | B.2a2+2a2=4a4 | ||
C.(a2b)3=a6b3 | D.3a-2=
|
A.-2ab | B.a2b | C.ab2 | D.a2b2 |
2 |
3 |
2 |
3 |
2 |
3 |
2 |
3 |
A.-6x4y5 | B.-9x4y9 | C.9x6y4 | D.6x6y4 |
© 2017-2019 超级试练试题库,All Rights Reserved.