What are u chatting over it's just the sum with the roots is -b/a that's 21 and the item in the roots is 91 (-d/a) which u can solve and variety an equation to have alpha or beta then find the opposite a single then u have the roots. It https://casestudyanalysis00091.loginblogin.com/43391604/rumored-buzz-on-case-study-help