Question

X2 AO QUADRADO -2X+1

Answer 1

x²-2x+1=0

x= $\frac{-(-2) \frac{+}{-} \sqrt{-2^2-4.1.1} }{2.1}$
x= $\frac{2 \frac{+}{-} \sqrt{4-4} }{2}$
x= $\frac{2 \frac{+}{-}0 }{2}$

$x^{I}= \frac{2}{2} = 1$
$x^{II}= \frac{2}{2} = 1$

$s= ( x^{I} =1, x^{II} =1)$