一題中二級的數學，已經全被遺忘的！= =

[匿名]

2011-04-24 5:08 am

求步驟！已經全部忘記了！= =

化簡 12x/y + 3xy/y^2

回答 (4)

Rachel

2011-04-24 6:34 am

✔ 最佳答案

12x/y + 3xy/y^2
=(12xy+3xy)/y^2
=15xy/y^2
=15x/y

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[匿名]

2011-04-25 4:10 am

12x/y + 3xy/y2= 12x/y + 3x/y= 15x/y

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知識就是力量

2011-04-24 6:00 am

12x/y + 3xy/y^2 = 15x/y

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[匿名]

2011-04-24 5:23 am

12x/y+(3xy/y)(3xy/y)
=12x/y+9x^2y^2/y^2
=x/y(12+9又x/y)
唔知對不對的

參考: me=]

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