0.16m^2 - 1.2 mn + 2.25 n^2
更新1:
Somuch ...]] @ ktss SORRY..YOU ARE WRONG!! THE 意見 ONE IS RIGHT
MATHZ (F.3) one Q before 2:45 p.m
2008-09-06 10:26 pm
use factorization// i need detail...THANKS !!!!!!! =]=]
0.16m^2 - 1.2 mn + 2.25 n^2
0.16m^2 - 1.2 mn + 2.25 n^2
回答 (2)
2008-09-06 11:24 pm
✔ 最佳答案
0.16m^2-1.2mn+2.25n^2=(4/25)m^2-(2)(2/5)(3/2)+(9/4)n^2
=(2/5 m-3/2 n)^2//
2008-09-06 10:47 pm
0.16m^2 - 1.2 mn + 2.25 n^2
=(0.4m - 1.5n)^2
=(0.4m - 1.5n)^2
收錄日期: 2021-04-23 20:44:49
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080906000051KK01316