[tex] x^{2} -4 = (x-2)(x-2)[/tex]
[tex] x^{2} -4x+4=0 =\ \textgreater \ (x-2)(x-2)
a=1
b=-4
c=4
delta = b^{2}-4ac
(-4)^{2}-4*1*4 = 16-16 = 0 (delta = 0 =\ \textgreater \ o radacina)
x_{1}= \frac{4+0}{2}= \frac{4}{2}=2 [/tex]
[tex]REZULTATUL =\ \textgreater \ \frac{(x-2)(x-2)}{(x-2)} [/tex]
