※ 引述《holipasi (誠意大叔^^)》之銘言：
: http://www.fotopu.com/fullsize/245084
: 感謝回答～～
: ３Ｑ～
1.題目可能是想以此法解:
2
a + 1 = 18√c => a + 2a + 1 = 324c
2
b + 16 = 2√a => b + 32b + 256 = 4a
2 2
c + 81 = 8√b => c + 162c + 81 = 64b
三式相加得
2 2 2
(a-1) + (b-16) + (c-81) = 0
_________
a = 1, b = 16, c = 81, √a+b+c+2 = 10
但是出題者可能沒注意到此解法有瑕疵
a, b, c代入原式都不合
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 27.51.27.37