Contact us
Choose a category below so we can get back to you as quickly as possible.
=(-1/2)^2009*(-2)^2009*(-2) =(-1/2*2)^2009*(-2) =-2
3*(-4*5) 分開算 -4*5=-20/(-4+5)=-20 所以3*(-20) =(-60)/(-17) =60/17
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.