Question

f(x)=x^2-2x+1 estudo completo

Answer 1

x²-2x+1=0
a=1;b=-2;c=1
∆=b²-4•a•c
∆=(-2)²-4•1•1
∆=4-4
∆=0
x½=-b±√∆/2•a
x½=-(-2)±√0/2•1
x½=(2±0)/2
x1=(2+0)/2
x1=2/2
x1=1
x2=(2-0)/2
x2=1
sol: x1 e x2=1