習題:
16. m^2 + 6 . m + 9
24. 3 . m^2 - 6 + 3
28. 5p . ( 3q -2 ) + 10 . ( 3q -2 )^2
32. -36^2 - 4 . y^2 . z^2 + 24 . x . y
([^]是次方!~ [^]後的數字是次數)( [.] 是乘)
要做因式分解o.o
數學習題(不懂做的題目)請答出部驟&答案
2007-10-27 8:55 pm
回答 (1)
2007-10-27 9:32 pm
✔ 最佳答案
16. m^2 + 6 . m + 9 = m^2 + 2(m)(3) + 3^2 = (m+3)^224. 3 . m^2 - 6 + 3 = 3(m^2 -2+1) = 3(m^2 -1) = 3(m-1)(m+1)
**條題目係咪3 . m^2 - 6 m+ 3???若是, 答案係:
3(m^2 - 2m + 1) = 3(m^2 - 2(m)(1) + 1^2) = 3(m-1)^2
28. 5p . ( 3q -2 ) + 10 . ( 3q -2 )^2 = 5(3q-2)[p + 2(3q-2)]
=5(3q-2)(p+6q-4)
32. -36^2 - 4 . y^2 . z^2 + 24 . x . y
呢條係咪有typing mistake??
收錄日期: 2021-04-13 18:12:17
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20071027000051KK01769