102內湖高中

第 7 題
令 a = 3 + 2√2，b = 3 - 2√2
a^6 + b^6 = 2[C(6，0) * 3^6 + C(6，2) * 3^4 * (2√2)^2 + C(6，4) * 3^2 * (2√2)^4 + C(6，6) * (2√2)^6] = 39202
0 < b^6 < 1
[a^6] = 39201