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

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Răspuns :

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