已知a^3m=2,b^2m=3,求(a^2m)³+(b^m)^6-(a²b)^3m·b^m的值 注:a^3m=a的3m次方,同理后面有“^"都代表次方
问题描述:
已知a^3m=2,b^2m=3,求(a^2m)³+(b^m)^6-(a²b)^3m·b^m的值
注:a^3m=a的3m次方,同理后面有“^"都代表次方
答
(a^2m)³+(b^m)^6-(a²b)^3m·b^m
=(a^3m)²+(b^2m)³-(a^3m)²(b^2m)²
=4+27-4×9
=-5