Question

"Sendo x = √0,444... e y = √0,111... , calcule x+ y"

Answer 1

x = V4/9 = 2/3

y = V1/9 = 1/3

Somando os valores x +y :

2/3 +1/3 =  1

Answer 2

x=$\sqrt{0,444...}$=
x=$\sqrt{ \frac{4}{9} }$=$\frac{2}{3}$

y=$\sqrt{0,11....}$=
y=$\sqrt{ \frac{1}{9} }$
y=$\frac{1}{3}$

x+y= $\frac{2}{3}$+$\frac{1}{3}$=
$\frac{3}{3}$=1