Brainliest ! a quadratic equation is show below: 9x^2 - 16x + 60 = 0 part a: describe the solution(s) to the equation by just determining the radicand. show your work. part b: solve 4x^2 + 8x - 5 = 0 by using an appropriate method. show the steps of your work, and explain why you chose the method used.