Question

Which of the following equations has only one solution?

0x²=9
x(x - 1) = 9
x2 - 6x + 9 = 0

Answer 1

3 and 0

Explanation:

(x+3)^2 =0

Answer 2

The last one:

x^2 - 6x + 9

Factors to: (x-3) and (x-3)

The only solution is: 3

Explanation: