问题
填空题
化简
|
答案
原式=
+1 a
(1+1 b
)+1 a
(1+1 c
)(1+1 a
)+(1+1 b
)(1+1 a
)(1+1 b
)(1 c
-1-1 d
)1 d
=
+1 a
(1+1 b
)+1 a
(1+1 c
)(1+1 a
)-(1+1 b
)(1+1 a
)(1+1 b
)1 c
=
+1 a
(1+1 b
)+(1+1 a
)(1+1 a
)(1 b
-1-1 c
)1 c
=
+1 a
(1+1 b
)-(1+1 a
)(1+1 a
)1 b
=
-(1+1 a
)1 a
=-1
故答案是:-1.