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230问答网 > 这第1-2数学题有谁会做我不知道怎填，，求高手祝我，急急急，求跪跪求。谢谢，求过程，和答案*我

这第1-2数学题有谁会做我不知道怎填，，求高手祝我，急急急，求跪跪求。谢谢，求过程，和答案*我

2025-03-16 17:30:42

推荐回答（2个）

回答1：

回答2：

(1) x=-b/2a=-2a/2a=-1 -1+4/2=-1+2=1 -1-4/2=-1-2=-3 A(-3,0) B(1,0)
(2) A(x1,0) B(x2,0) x2>x1 AB=2 x2-x1=2 x1+x2=-b/a=-6/2=-3 x1x2=c/a=m/2
(x1+x2)^2= (x2-x1)^2+4x1x2 4+4*m/2=9 2+2m=9 2m=7 m=7/2

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