(x-8)(x-5)=x*x-415
问题描述:
(x-8)(x-5)=x*x-415
答
=>x*x-13x+40=x*x-415
=>13x=455
=>x=35
(x-8)(x-5)=x*x-415
=>x*x-13x+40=x*x-415
=>13x=455
=>x=35