我想問下：
２＾２ 同 ２Ｘ 有咩分別？
係咪２個都係乘？
仲有Ｄ咩分別？
計數時應該點分？
數學１題（簡單）！
2007-08-07 1:33 am
回答 (4)
2007-08-07 1:42 am
✔ 最佳答案
對終2呢個數字黎講可以話冇分別
２＾２＝２ｘ２
２ｘ＝２ｘ２
但如果數字變左既話就有分別
４＾６＝４ｘ４ｘ４ｘ４ｘ４ｘ４＝４０９６
４ｘ６＝２４
就係咁樣
參考: 自己
2007-08-08 5:58 am
2^2 is index notation
and 2^2 always equal to 4
2x= 2*x
x is unknown
2x can be any number with different value of x
For example, when x=1 2x=1
x=1.5 2x=3
......
2007-08-07 21:59:23 補充：
2^2 is a constant2x is a monomial and x is a variable
and 2^2 always equal to 4
2x= 2*x
x is unknown
2x can be any number with different value of x
For example, when x=1 2x=1
x=1.5 2x=3
......
2007-08-07 21:59:23 補充：
2^2 is a constant2x is a monomial and x is a variable
2007-08-07 1:39 am
2*2=4
BUT 2X 唔一定係4
因為x係未知數 , 可以係1 , 2, 3 , 4 , 5 , 6 , etc
所以2*2 唔一定係2x
BUT 2X 唔一定係4
因為x係未知數 , 可以係1 , 2, 3 , 4 , 5 , 6 , etc
所以2*2 唔一定係2x
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原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070806000051KK03705