The server is under maintenance between 08:00 to 12:00 (GMT+08:00), and please visit later.
We apologize for any inconvenience caused
Login  | Sign Up  |  Oriprobe Inc. Feed
China/Asia On Demand
Journal Articles
Laws/Policies/Regulations
Companies/Products
Bookmark and Share
qiu zhi wen ti de te shu jie fa
Author(s): 
Pages: 40-42
Year: Issue:  Z2
Journal: Required Reading for Junior Middle School Students

Abstract: <正>一、凑零代入法例1 已知 ,则a4-2a3-4a2+1=______. 解由 ,得 .平方、整理,得a2-2a-4=0. ∴原式=a2(a2-2a-4)+1=a2·0+1=1. 二、整体代入法 .
Related Articles
No related articles found