计算:(5+1)(52+1)(54+1)(58+1)(516+1)+14=______.

问题描述:

计算:(5+1)(52+1)(54+1)(58+1)(516+1)+

1
4
=______.

(5+1)(52+1)(54+1)(58+1)(516+1)+

1
4

=
1
4
(5-1)(5+1)(52+1)(54+1)(58+1)(516+1)+
1
4

=
1
4
(532-1)+
1
4

=
532
4

答案解析:本题是平方差公式的应用,把多项式:(5+1)(52+1)(54+1)(58+1)(516+1)+
1
4
转化为
1
4
(5-1)(5+1)(52+1)(54+1)(58+1)(516+1)+
1
4
=
1
4
(532-1)+
1
4
的形式,然后再利用平方差公式计算
1
4
(516•2-1)+
1
4
=
532
4

考试点:平方差公式.
知识点:本题考查了平方差公式的运用,添加
1
4
(5-1)项构造成平方差公式的形式是解题的关键,注意要连续多次运用公式.