问题
填空题
①(2-
|
答案
①(2-
)1001•(2+5
)1000=[(2-5
)(2+5
)]1000•(2-5
)5
=(-1)1000•(2-
)5
=2-
;5
②
=0.3;(-0.3)2
③
=2-(2-
)23
.3
①(2-
|
①(2-
)1001•(2+5
)1000=[(2-5
)(2+5
)]1000•(2-5
)5
=(-1)1000•(2-
)5
=2-
;5
②
=0.3;(-0.3)2
③
=2-(2-
)23
.3