در شکل زیر مقدار مجهول را بیابید.
\(\sqrt {51} \)
\(\sqrt {50} \)
\(\sqrt {10} \)
\(\sqrt {11} \)
\(\begin{array}{l}{x^2} = {\left( {\sqrt 3 } \right)^2} + {\left( {\sqrt 7 } \right)^2}\,\, \Rightarrow \,\,{x^2} = 3 + 7 = 10\\\\ \Rightarrow \,\,x = \sqrt {10} \end{array}\)