Question

9 x elevado a 2 - 6x + 1 = 0​

Answer 1

9x²-6x+1=0

∆=(-6)²-4•9•1
∆=36-36
∆=0

$x= \frac{ 6 +0 }{18} = \frac{6}{18} = \frac{1}{3}$

x=1/3