解
x^2n=4
∴
x^6n
=(x^2n)³
=4³
=64
(3x^3n)²
=9x^6n
=9×64
=576
若x^2n=4,求x^6n和(3x^3n)^2
1个回答
相关问题
-
若x^2n=2,求（-3x^3n）²-4（-x²）^2n的值.
-
已知x^3n=2,y^2n=3,求x^6n+y^6n*x^4n
-
若n为正正数,且x^2n=2 求（3x^3n）^2-4（x^2）^2n 的值
-
求收敛结果x^2+x^4/2!+x^6/3!+…+x^2n/n!
-
规定m△n=6m+3n,若x△9=37.求2△（x△4）.
-
若n为正整数,且x^2n=2,试求(3x^3n)^2-4(-x^2)^2n 的值.
-
(1)已知x^m=3,x^n=6,求x^m-n,x^3m-2n的值 (2)已知x^4n+3/x^n+1=x^n+3*x^
-
若x^m=4,x^n=3,则x^3n=________,x^m+2n=_________
-
若x^m=3 ,x^n=6 则x^3m-2n=__
-
若3/4x^[5m+2n+2]y^3与-4/3x^[6]y^[3m-2n-1]的和是单项式,求m,n的值