How can you tell whether a solution of a polynomial equation is a repeated solution when the equation is written in factored form

If the measure of xyz is 81 what is the measure of yz

Mozart lenses inc. recently introduced seelites, a thinner lens for eyelasses. of a sample of 800 eyeglass wearers, 246 said they would purchases their next pair of eyeglasses with the new lenses. lenses inc. estimates that the number of people who purchase eyeglasses in a year is 1,700,000. most eyeglasses wearer buy one new pair of eyeglasses a year. what is the annual sales potential for the new lenses.

Find the center of the circle that can be circumscribed about efg with e(4,4) f(4,2) g(8,2)