expand:
1) 3(2m-5)^2
2) (x-5y)(x+5y)-(4x-3y)^2
simplify:
1. mx-nx-my+ny/7y-7x
2. 9-30k+25k^2/3+3x 乘 1-x^2/x-1 除(20k-12)
f.2 maths expand & simplify
2008-11-26 1:30 am
回答 (2)
2008-11-26 1:46 am
✔ 最佳答案
3(2m-5)(2m-5)=12m^2-60m+75
2008-12-05 4:20 am
3(2m-5)(2m-5)
=12m^2-60m+75
=12m^2-60m+75
收錄日期: 2021-04-19 23:58:42
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https://hk.answers.yahoo.com/question/index?qid=20081125000051KK01056