What exactly are u chatting over it's just the sum on the roots is -b/a that is 21 and also the products on the roots is 91 (-d/a) which u can fix and sort an equation for getting alpha or beta then uncover the other 1 then u hold the https://reidraznd.azzablog.com/36008510/new-step-by-step-map-for-case-study-analysis