题目内容
化简得
A. B. C. D.
A. B. C. D.
D
根据平方差公式将(3+1)(32+1)(34+1)(38+1)进行化简,即可求出答案.
解答:解:(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.
解答:解:(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.
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