中一maths

🎓 學業台教學

倩怡

2007-11-04 7:17 am

(5-4y2次方)-(5y-y2次方+3)
請化簡
同列式 thx

回答 (4)

Chak

2007-11-04 7:24 am

✔ 最佳答案

(5-4y2)-(5y-y2+3)
=5-4y2-5y-y2+3
=-3y2-5y+8

應該係咁 -]

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病

2007-11-04 7:36 am

唔知岩唔岩：

(5-4y2次方)-(5y-y2次方+3)
= 5 - 4y2次方 - 5y - y2次方 + 3
= 5 + 3 - 4y2次方 - y2次方 - 5y
= 8 - 3y2次方 - 5y

參考: 自己

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用戶152301

2007-11-04 7:27 am

(5-4y2次方)-(5y-y2次方+3)
=5-4y2次方-5y+y2次方-3
=5-3-4y2次方+y2次方-5y
=2-3y2次方-5y2次方''

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IQ小博士

2007-11-04 7:23 am

(5-4y2次方)-(5y-y2次方+3)
=(y2次方)-(4y2次方+3)

參考: ~~~

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