Odpowiedź:
[tex]1) {x}^{2} = {3}^{2} + {8}^{2} \\ {x}^{2} = 9 + 64 \\ {x}^{2} = 73 \\ x = \sqrt{73} [/tex]
[tex]2) {y}^{2} + {2}^{2} = {(2 \sqrt{17}) }^{2} \\ {y}^{2} = 4 \times 17 - {2}^{2} \\ {y}^{2} = 68 - 4 \\ {y}^{2} = 64 \\ y = 8[/tex]
[tex]3)12 \div 2 = 6 \\ {z}^{2} + {6}^{2} = {8}^{2} \\ {z}^{2} = {8}^{2} - {6}^{2} \\ {z}^{2} = 64 - 36 \\ {z}^{2} = 28 \\ z = \sqrt{2 \times 2 \times 7} = 2 \sqrt{7} [/tex]
