Question

15 POINTS!!!!!!!!

Which of the following equations has only one solution?

x2 = 9
x(x - 1) = 9
x2 - 6x + 9 = 0

Answer 1

x2=9 has only one solution, which is 4.5

Explanation:

that is the answer

Answer 2

x2=9 has only one solution, which is 4.5