Contact us
Choose a category below so we can get back to you as quickly as possible.
m=±1,a/b=-1,a+b=0,cd=1 當m=1時,原式=1+1+0-1=1 當m=-1時,原式=-1+1+0-1=-1 綜上所述,原式等於1或-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.