Solve using the quadratic formula

x^2-4x+1=0

x = 5.73   and x =  2. 27

Step-by-step explanation:

Quadratic formula

x = -b ±

x^2-4x+1=0

from the equation;

a = 1

b = -4

c = 1

slot in the values in x = -b ±

x = - (-4) ±  

x = 4 ±  

x = 4 ±

x = 4 ±

x = 4 ± 1.73

x = 4 + 1.73 = 5.73

and

x = 4 - 1.73 = 2. 27

the probability is 0