根式運算，請給我完整算式
回答 (3)
2014-11-30 11:55 pm
✔ 最佳答案
https://fbcdn-sphotos-c-a.akamaihd.net/hphotos-ak-xpa1/v/t1.0-9/s552x414/1508063_1492923314329902_6134452926039430217_n.jpg?oh=9ead4f2d6afaa44de4f84df03ce9ae44&oe=551C3814&__gda__=1427639282_c192ab4df6e2ebb32c64ff937ea940f9
圖片參考：https://s.yimg.com/lo/api/res/1.2/U9WruRnRJTiBLrDzlf2GDA--/YXBwaWQ9dHdhbnN3ZXJzO3E9ODU-/https://fbcdn-sphotos-c-a.akamaihd.net/hphotos-ak-xpa1/v/t1.0-9/s552x414/1508063_1492923314329902_6134452926039430217_n.jpg?oh=9ead4f2d6afaa44de4f84df03ce9ae44&oe=551C3814&__gda__=1427639282_c192ab4df6e2ebb32c64ff937ea940f9
2014-12-01 12:43 am
[2√7 +(2√3)/4]*2 +(2√7 +√3)
= 4√7 +√3 +(2√7)/7 +√3
= (4 +2/7)√7 +2√3
= (30/7)√7 +2√3
= 4√7 +√3 +(2√7)/7 +√3
= (4 +2/7)√7 +2√3
= (30/7)√7 +2√3
2014-11-30 8:55 pm
首先展開
2√7*2+2√3/4*2+2/√7+√3
=4√7+2√3/2+2√7/7+√3
=30√7/7+4√3/2
補充
2/√7分子分母上下同*√7把分母的根號去掉=2√7/7
2√7*2+2√3/4*2+2/√7+√3
=4√7+2√3/2+2√7/7+√3
=30√7/7+4√3/2
補充
2/√7分子分母上下同*√7把分母的根號去掉=2√7/7
參考: 自己
收錄日期: 2021-04-27 21:32:19
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20141130000010KK01944