一條好唔明既方程

👨🏻‍🏫 學術台數學

c chung

2006-10-25 2:59 am

化簡：2pqr+3pqr-2rqp-r=？？
唔該解釋埋～
※仲有唔好答(5pqr-2rqp-r)我答過係錯嫁！！唔該唔該～

回答 (5)

Wong

2006-10-25 3:04 am

✔ 最佳答案

2pqr+3pqr-2rqp-r
=2pqr+3pqr-2pqr-r (p,q,r 次序冇所謂)
=3pqr-r
=r(3pq-1)

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用戶19809

2006-10-26 2:46 am

你錯的原因是因為沒注意到5pqr同-2rpq是like term
2pqr+3pqr-2rqp-r
=3pqr-r

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leockcheung

2006-10-25 3:19 am

2pqr+3pqr-2rqp-r
=2pqr+3pqr-2pqr-r
=3pqr-r

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Angus

2006-10-25 3:07 am

2pqr+3pqr-2rqp-r=？？

答:2pqr+3pqr-2rqp-r
because 2rpq﹦2pqr
∴5pqr and 2rpq are the like terms
=5pqr-2rpq-r
=3pqr-r

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ycwtl0213

2006-10-25 3:03 am

2pqr+3pqr-2rqp-r
=2pqr+3pqr-2pqr-r
=3pqr-r

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