Exactly what are u chatting about this's just the sum with the roots is -b/a that is 21 and also the item from the roots is ninety one (-d/a) which u can fix and variety an equation to obtain alpha or beta then come across the other one particular then https://case-solution22873.thezenweb.com/the-smart-trick-of-case-study-analysis-that-no-one-is-discussing-73921248