Contact us
Choose a category below so we can get back to you as quickly as possible.
|-4|-(-2)的2次方+(-1)的2013次方-1除以2 =4-4+(-1)-1/2 =0-1-1/2 =-3/2
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.