问题
选择题
已知:am=7,bn=
|
答案
(-a3mbn)2(amb2n)3
=(am)6(bn)2(am)3(bn)6
=(am)9(bn)8
=79×(
)81 7
=78×(
)8×71 7
=(7×
)8×71 7
=7.
故选:C.
已知:am=7,bn=
|
(-a3mbn)2(amb2n)3
=(am)6(bn)2(am)3(bn)6
=(am)9(bn)8
=79×(
)81 7
=78×(
)8×71 7
=(7×
)8×71 7
=7.
故选:C.