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歡迎您訪問數學考題練習:下列運算正確的是!

數學考題練習:下列運算正確的是

更新時間:2024-01-12 12:53:22作者:貝語網校

下列運算正確的是

A.(2x33=6x9

B.x6÷x3=x2

C.x2•x2=x4

D.3x3-2x=x

試題答案

C

試題解析

根據同底數冪的除法法則、同底數冪的乘法及合并同類項的法則,分別進行各選項的判斷即可.

解答:A、(2x33=8x9,故本選項錯誤;

B、x6÷x3=x6-3=x3,故本選項錯誤;

C、x2•x2=x2+2=x4,故本選項正確;

D、3x3-2x≠x,故本選項錯誤;

故選C.

點評:本題考查了同底數冪的乘除法則、合并同類項的法則,解答本題的關鍵是掌握各部分的運算法則.

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