已知X^（2m）=2,X^(n)=5 (1)X^(6m) （2)X^(4m+2n)_数学解答

已知X^（2m）=2,X^(n)=5 (1)X^(6m) （2)X^(4m+2n)

人气：499 ℃　时间：2020-08-31 07:04:28

解答

(1)X^(6m)=[X^(2m)]^3=2^3=8
(2)X^(4m+2n)=X^(4m)*X^(2n)={[X^(2m)]^2}*[X^(n)^2]=2^2*5^2=4*25=100