已知a,b,c满足3√a-b +4√c =16,且* =4√ a-b-3√ c,求*的取值范围

已知a,b,c满足3√a-b +4√c =16,且* =4√ a-b-3√ c,求*的取值范围
已知a,b,c满足3√a-b +4√c =16,且* =4√ a-b-3√ c,求*的取值范围

已知a,b,c满足3√a-b +4√c =16,且* =4√ a-b-3√ c,求*的取值范围
设x=√a-b,y=√c,z=*
则x>=0,y>=0 3x+4y=16 3x