问题
选择题
化简(3+1)(32+1)(34+1)(38+1)得( )
|
答案
(3+1)(32+1)(34+1)(38+1)
=
(3-1)(3+1)(32+1)(34+1)(38+1)1 2
=
(32-1)(32+1)(34+1)(38+1)1 2
=
(34-1)(34+1)(38+1)1 2
=
(38-1)(38+1)1 2
=
(316-1).1 2
故选D.
化简(3+1)(32+1)(34+1)(38+1)得( )
|
(3+1)(32+1)(34+1)(38+1)
=
(3-1)(3+1)(32+1)(34+1)(38+1)1 2
=
(32-1)(32+1)(34+1)(38+1)1 2
=
(34-1)(34+1)(38+1)1 2
=
(38-1)(38+1)1 2
=
(316-1).1 2
故选D.