(100-x)(80-x)=7644的解题步骤及答案
问题描述:
(100-x)(80-x)=7644的解题步骤及答案
答
8000-100x-80x+x2=7644x2-180x+356=0(x-2)(x-178)=0x=2、178
(100-x)(80-x)=7644的解题步骤及答案
8000-100x-80x+x2=7644x2-180x+356=0(x-2)(x-178)=0x=2、178