What are u chatting over it's just the sum on the roots is -b/a that's 21 plus the merchandise on the roots is ninety one (-d/a) which u can remedy and kind an equation to acquire alpha or beta then locate one other a person then u hold the roots. https://brooksbjzoh.aioblogs.com/88663837/the-single-best-strategy-to-use-for-case-study-help