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歡迎您訪問數學考題練習:利用平方差計算(2+1)(22+1)(24+1!

數學考題練習:利用平方差計算(2+1)(22+1)(24+1

更新時間:2024-01-12 16:32:14作者:貝語網校

利用平方差計算(2+1)(22+1)(24+1)(28+1)+1=________.

試題答案

216

試題解析

在原式前面加(2-1),利用兩數的和與這兩數的差的積,等于這兩個數的平方差,把原式變成可以運用平方差公式的式子,再利用平方差公式計算即可.

解答:(2+1)(22+1)(24+1)(28+1)+1,

=(2-1)(2+1)(22+1)(24+1)(28+1)+1,

=216

點評:本題主要考查了平方差公式,添加(2-1)構造成平方差公式的形式是解題的關鍵,也是本題的難點.

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