Решите уравнение (x-3)²=0

Question

Решите уравнение
(x-3)²=0

Answer 1

(x-3)²=0
x²-6x+9=0
Д=36-4*1*9=36-36=0
x=6/2=3

Answer 2

X^2-6*x+9=0
D=36-36=0
x=6/2
x=3