已知a^m=2,a^n=3,求a^2m+3n的值；已知a^2n+1=5,求a^6n+3的值；已知x^n=2,y^n=

学习时间:2026-08-15 11:46:13 阅读：3113

已知a^m=2,a^n=3,求a^2m+3n的值；已知a^2n+1=5,求a^6n+3的值；已知x^n=2,y^n=3,求(（x^2)y)^2n的值.

忧伤的糖豆

2026-08-15 11:46:13

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a^2m+3n=a^2m x a^3n= (a^m)^2 x (a^n)^2=4x9=36 a^6n+3 = (a^2n+1)^3=5x5x5=125 (（x^2)y)^2n = (x^n)^4 x (y^n)^2 = 16x9=144

已知a^m=2,a^n=3,求a^2m+3n的值； 已知a^2n+1=5,求a^6n+3的值 ；已知x^n=2,y^n=