What are the roots of the polynomial equation? x2+11x−80=0

Hi, can anyone show me how to do this problem? 100 points for this. in advance

Which is the correct first step in finding the area of the base of a cylinder with a volume of 26x cubic meters and a height of 6.5 meters? v=bh 6.5=b(26x) v=bh v=26pi+(6.5) v=bh v=26pi(6.5) v=bh 26pi=b(6.5)

What is the slope of the line? a. -5/2 b.2/5 c. 5/2 d.7/2