问题
填空题
(7-5
|
答案
由题意知,(7-5
)2009•(7+52
)20102
=(7-5
)2009•(7+52
)2009•(7+52
)2
=(-1)2009•(7+5
)=-7-52
,2
故本题的答案为-7-5
.2
(7-5
|
由题意知,(7-5
)2009•(7+52
)20102
=(7-5
)2009•(7+52
)2009•(7+52
)2
=(-1)2009•(7+5
)=-7-52
,2
故本题的答案为-7-5
.2