√a+√b=1 且a=m+(a+b)/2 √b=n-(a+b)/2 求m²+n

问题描述:

√a+√b=1 且a=m+(a+b)/2 √b=n-(a+b)/2 求m²+n

题目错了吗?已知√a+√b=1且√a=m+(a-b)/2,√b=n-(a-b)/2求m^2+n^2的值m+n=√a+√b=1a-b=(√a-√b)(√a+√b)=√a-√bmn=(√a-(a-b)/2)(√b+(a-b)/2)=(√a-(√a-√b)/2)(√b+(√a-√b)/2)=(√a+√b)/2*(√a+√b)/2=1/...