1. -12+27a^4 = 27a^4-12?
2.-12+27a^4 = ? please calculate
3.8m^3-12m^2+2m+5= ? please calculate
4.(h^-2k^-2) / (h^-1+k^-1) = ? please calculate
maths questions[10marks]
2008-11-02 11:11 pm
回答 (1)
2008-11-07 12:29 am
✔ 最佳答案
-12+27a^4 is = 27a^4-12because -12+27a^4 = -(-27a^4+12) = 27a^4-12
3 8m^3-12m^2+2m+5
=2m(4m^2-6m+2)+5
=2m[(4m-2)(m-1)]+5
4(don't understand (睇唔明)
收錄日期: 2021-04-13 16:13:23
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https://hk.answers.yahoo.com/question/index?qid=20081102000051KK01184