已知X的3N次方等于2,求X的6N次方加X的4N次方乘以X的5N次方的值
问题描述:
已知X的3N次方等于2,求X的6N次方加X的4N次方乘以X的5N次方的值
答
x^(6n)+x^(4n)*x^(5n)=x^(6n)+x^(9n)=[x^(3n)]^2+[x^(3n)]^3=2^2+2^3=4+8=12
已知X的3N次方等于2,求X的6N次方加X的4N次方乘以X的5N次方的值
x^(6n)+x^(4n)*x^(5n)=x^(6n)+x^(9n)=[x^(3n)]^2+[x^(3n)]^3=2^2+2^3=4+8=12