Contact us
Choose a category below so we can get back to you as quickly as possible.
(2a+2b+1)*(2b-a-1)+(a-b+1)²;=[2*1/2+2*(-1)+1]*[2*(-1)-1/2-1]+[1/2-(-1)+1]²;=(1-2+1)*(-2-1/2-1)+(1/2+1+1)²;=0*(-7/2)+(5/2)²;=0+25/4=25/4
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.