Question 321460
(x-12)^2=20
x^2-24x+144=20
x^2-24x+144-20=0
x^2-24x+124=0
Approximate values 16 & 8.
{{{x = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}} 
x=(24+-sqrt[-24-4*1*124])/281
x=(24+-sqrt[576-496])/2
x=(24+-sqrt80)/2
x=(24+-8.944)/2
x=24+8.944)/2
x=32.994/2
x=16.472 ans.
x=(24-8.944)/2
x=15.056/2
x=7.528 ans.