x^2-4x+4=0
韦达定理老大 题目是二元一次方程啊那有无穷个这样的方程组吧,由韦达定理知道两根均为2,随便构造一个二元一次方程即可
一个二元一次方程有两个根,两根之和与两根之积都是4,求这个二元一次方程的表达式
一个二元一次方程有两个根,两根之和与两根之积都是4,求这个二元一次方程的表达式
数学人气:290 ℃时间:2020-01-30 14:10:05
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