3) Assume the point of tangency at the diameter - Solve for the value of x (becareful, there is a trick!)

Which of the following represents a number squared is equal to twenty more than nine times that number ? a) x squared = 9x + 20 b) x squared = 20x + 9 c) x squared > 9 + 20x d) x squared = 9 + x + 20

Which one ? is the answer and how to find this answer

How do you do the foil method with polynomials?