唔該我想問個數學題目
回答 (1)
2007-04-04 6:16 am
✔ 最佳答案
(x+3y)2次方-9y-3x Let me rewrite it as (x+3y)^2 -9y-3x
(x+3y)^2 -9y-3x
= (x+3y) * (x+3y) -9y-3x
= (x+3y) * (x+3y) - 3(3y+x)
= (x+3y) * (x+3y - 3)
simplified form or expanded form?
Ans: (x+3y)(x+3y - 3)
收錄日期: 2021-04-20 13:10:04
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