Contact us
Choose a category below so we can get back to you as quickly as possible.
原式=x²;+x-2-2(x²;-6x+9) =x²;+x-2-2x²;+12x-18 =-x²;+13x-20
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.