4x^2-9=0
更新1:
即係答案要x=(?)或x=(?)
求救！中四math因式分解
回答 (2)
2008-09-11 1:42 am
4x^2-9=0
4x^2=9
x^2=9/4
x=9/4既開方
4x^2=9
x^2=9/4
x=9/4既開方
收錄日期: 2021-04-20 11:50:56
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