Maths problem: how to do 11, thanks?
回答 (1)
2020-12-19 1:35 am
✔ 最佳答案
m - n = 52n^2 - m^2 = 71
∴ 2n^2 - (n+5)^2 = 71
n^2 - 1on - 96 = o
(n-5)^2 = 121 = 11^2
∴ n = 16
m = 21
收錄日期: 2021-04-24 08:07:34
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20201218132357AAwe2w8