高一數學跪求解答~~~?
回答 (2)
2017-07-18 2:05 pm
✔ 最佳答案
SolA=198+1/196
=196+2+1/196
=14^2+2*(14)*(1/14)+(1/14)^2
=(14+1/14)^2
√A=14+1/14
2017-07-18 2:13 pm
sqrt198又1/196
=sqrt(196*198+1/196)
=sqrt((197-1)(197+1)+1/196)
=sqrt(197^2-1+1/196)
=sqrt(197^2/196)
=197/14
=14又1/14
=sqrt(196*198+1/196)
=sqrt((197-1)(197+1)+1/196)
=sqrt(197^2-1+1/196)
=sqrt(197^2/196)
=197/14
=14又1/14
收錄日期: 2021-04-18 17:16:40
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20170718054821AAI2ajl