若(x+5)(x-7)=x2+mx+n,则m=_,n=_.
问题描述:
若(x+5)(x-7)=x2+mx+n,则m=______,n=______.
答
(x+5)(x-7)=x2-2x-35=x2+mx+n,
则m=-2,n=-35.
故答案为:-2,-35.