\[\sqrt{x} = 1 \Longrightarrow x = 1\]
\[\sqrt{x} = 2 \Longrightarrow x = 4\]
\[\sqrt{x} = 2,5 \Longrightarrow x = 6,25\]
\[\sqrt{x} = 3,2 \Longrightarrow x = 10,24\]