Question

cit face calculul [tex] x^{2} -2x+1=?

[/tex]

Answer 1

Probabil te-ai referit care e solutia, daca ecuatia e egala cu 0...
$x^{2} -2x+1=0$
 a=1, b=-2, c=1
Δ=$b^{2}-4ac$
Δ=$(-2)^{2}-4*1*1=4-4=0$ (in acest caz ecuatia de gradul doi are doar o solutie)
x=$\frac{-b}{2a}$
x=$\frac{-(-2)}{2*1}$
x=$\frac{2}{2}$
x=1