题目内容
化简(3+1)(32+1)(34+1)(38+1)得( )
A.(38+1)2 | B.(38-1)2 | C.316-1 | D.
|
(3+1)(32+1)(34+1)(38+1)
=
(3-1)(3+1)(32+1)(34+1)(38+1)
=
(32-1)(32+1)(34+1)(38+1)
=
(34-1)(34+1)(38+1)
=
(38-1)(38+1)
=
(316-1).
故选D.
=
1 |
2 |
=
1 |
2 |
=
1 |
2 |
=
1 |
2 |
=
1 |
2 |
故选D.

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