Contact us
Choose a category below so we can get back to you as quickly as possible.
先觀察這個式子,後3項可以構成完全平管道 1、變形1/-2-a^2-2ab-b^2 =1/-2-(a^2+2ab+b^2) =1/-2-(a+b)^2 2要使式子最簡,則(a+b)^2=o 3所以,ab滿足條件:a、b互為相反數
We and our partners use cookies and other technologies to analyze traffic and optimize your experience. View more info and control your cookies settings at any time in our Cookies Policy.