Contact us
Choose a category below so we can get back to you as quickly as possible.
∵(a-2)²;+(b+1)²;≥0 a²;-4a+4+b²;+2b+1≥0 a²;+b²;+5≥4a-2b ∴a²;+b²;+5≥2(2a-b)
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.