若两个不等实数m,n满足m*2-2m=a,n*2-2n=a,m*2+n*2=5,则实数a的值是?
若两个不等实数m,n满足m*2-2m=a,n*2-2n=a,m*2+n*2=5,则实数a的值是?
数学人气：187 ℃时间：2020-06-04 05:43:57
优质解答
韦达定理,1/2请问您确定？答案是1/2，但不用维达定理。
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