问题
选择题
(1-2-
|
答案
原式=(1-2-
)-1[(1-2-1 32
)(1+2-1 16
)](1+2-1 16
)(1+2-1 8
)(1+2-1 4
)1 2
=(1-2-
)-1(1-2-1 32
)(1+2-1 8
)(1+2-1 8
)(1+2-1 4
)1 2
=(1-2-
)-1(1-2-1 32
)(1+2-1 4
)(1+2-1 4
)1 2
=(1-2-
)-1(1-2-1 32
)(1+2-1 2
)1 2
=(1-2-
)-1(1-2-1)1 32
=
(1-2-1 2
)-1.1 32
故选A.