X的3n次方=2,求X的6n次方+X的2n次方乘X的10n次方

题目

X的3n次方=2,求X的6n次方+X的2n次方乘X的10n次方

答案

x^3n=2
x^6n+x^2n*x^10n
=x^(2*3n)+x^(2n+10n)
=(x^3n)^2+x^12n
=(x^3n)^2+x^(4*3n)
=(x^3n)^2+(x^3n)^4
=2^2+2^4
=20