Contact us
Choose a category below so we can get back to you as quickly as possible.
把(x+y)的m-1次方提出來整理一下就ok了. 哎,(x+y)^(m+1)-(x+y)^(m-1)=(x+y)^(m-1)*(x+y)^2-(x+y)^(m-1)=(x+y)^(m-1)*[(x+y)^2-1]
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.