9x2-8x-8=0 5. Solve using the quadratic formula. Explain and present as an exact and as a decimal rounded to three decimal places. Formula: x= Identify a,b,c: a=9, b=-8, c=-8 Use formula: x= Simplify (solve under radical and denominator): To answer exact, simplify the square root: x= Simplify fraction by finding the common factor in numerator: Simplify further by the common factor in numerator and denominator: x= or x= To answer x as a decimal rounded to three places, after simplifying to: solve as or x=1.487 or x=-.598 1. Find the axis of symmetry and vertex of your classmate's quadratic equation