Question

$4 x^{2} -4x+1$

Answer 1

a=4
b=-4
c=1

Delta=b^2-4ac
delta=16-4*4*1
delta=16-16
delta=0 => are sol unica, x1=x2

x1;2=-b+radical delta/2a
x1;2=4+0/2*4
x1;2=4/8
x1;2=1/2