مقدار x را بیابید.
4
\(\sqrt {17} \)
\(\sqrt {15} \)
2
\(\begin{array}{l}{x^2} + {3^2} = {5^2}\,\, \Rightarrow \,\,{x^2} = {5^2} - {3^2}\,\, \Rightarrow \,\,{x^2} = 25 - 9\\\\{x^2} = 16\,\, \Rightarrow \,\,x = \sqrt {16} = 4\end{array}\)