Explicación paso a paso:
[tex] {13}^{2} = {12}^{2} + {x}^{2} \\ 169 = 144 + {x}^{2} \\ 25 = {x}^{2} \\ \sqrt{25} = x \\ 5 = x[/tex]
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Explicación paso a paso:
[tex] {13}^{2} = {12}^{2} + {x}^{2} \\ 169 = 144 + {x}^{2} \\ 25 = {x}^{2} \\ \sqrt{25} = x \\ 5 = x[/tex]