(x-m)与(x+7)乘的积的常数项为28,则m等于几?
问题描述:
(x-m)与(x+7)乘的积的常数项为28,则m等于几?
答
m=-4
答
由题知常数项为-7m,所以m=-4
(x-m)与(x+7)乘的积的常数项为28,则m等于几?
m=-4
由题知常数项为-7m,所以m=-4