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歡迎您訪問數學考題練習:4x2-(2x-3y)(2x+3y)的計算結果!

數學考題練習:4x2-(2x-3y)(2x+3y)的計算結果

更新時間:2024-01-12 14:01:38作者:貝語網校

4x2-(2x-3y)(2x+3y)的計算結果是

A.9y2

B.-9y2

C.3y2

D.2x3+3y2

試題答案

A

試題解析

利用單項式的乘法法則,計算后直接選取答案.

解答:原式=4x2-4x2+9y2=9y2

故選A.

點評:本題考查了平方差公式,把平方差公式展開即得.

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