1.
[tex] {2}^{2} + {7}^{2} = {x}^{2} \\ 4 + 49 = {?}^{2} \\ {x}^{2} = 53 \\ x = \sqrt{53} [/tex]
2.
[tex] {2}^{2} + {y}^{2} = (2 \sqrt{10} )^{2} \\ 4 + {y}^{2} = 4 \times 10 \\ 4+ {y}^{2} = 40 \\ {y}^{2} = 36 \\ y = \sqrt{36} = 6[/tex]
3.
[tex] {z}^{2} + {5}^{2} = {8}^{2} \\ {z}^{2} + 25 = 64 \\ {z}^{2} = 39 \\ z = \sqrt{39} [/tex]
Myślę że pomogłem ;)
