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> 如果二次三项式是完全平方式,则m=.-九年级数学
如果二次三项式是完全平方式,则m=.-九年级数学
题目简介
如果二次三项式是完全平方式,则m=.-九年级数学
题目详情
如果二次三项式
是完全平方式,则m=
.
题型:填空题
难度:中档
来源:不详
答案
±12
此题考查了配方法,一次项系数等于二次项系数与常数项的平方根的积的2倍,注意完全平方式有两个,所以一次项系数有两个且互为相反数
解:
m=±2×2×3=±12
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题目简介
如果二次三项式是完全平方式,则m=.-九年级数学
题目详情
答案
解:
m=±2×2×3=±12