Răspuns:
[tex]1. {4}^{2} + {3 }^{2} = {x}^{2} \\ 16 + 9 = {x}^{2} \\ 25 = {x}^{2} \\ x = \sqrt{25 } \\ x = 5 \\ 2. {x}^{2} + {5}^{2} = {16}^{2} \\ {x}^{2} + 25 = 256 \\ {x}^{2} = 256 - 25 \\ {x}^{2} = 231 \\ x = \sqrt{231} \\ 3. {13}^{2} + {x}^{2} = {24}^{2} \\ 169 + {x}^{2} = 576 \\ {x}^{2} = 576 - 169 \\ {x}^{2} = 407 \\ x = \sqrt{407 } [/tex]
