PLEASE HELP ME I WILL GIVE YOU BRAINLIST AND ALL MY POINTS

(98 points) i need with 5 questions. answer definitions are welcomed, but not necessary.

Find the roots of the equation below. x^2 - 6 + 9 = 0

One of every 20 customers reports poor customer service on your company’s customer satisfaction survey. you have just created a new process that should cut the number of poor customer service complaints in half. what percentage of customers would you expect to report poor service after this process is implemented? 1.) 5% 2.) 10% 3.) 2% 4.) 2.5%