Respuesta:
x= 29
x=[tex]\sqrt{313}[/tex]
Explicación paso a paso:
[tex]x^{2} = 21^{2} +20^{2} \\x= \sqrt{441+400} \\x= \sqrt{841}\\x=29\\[/tex]
[tex]x^{2} =12^{2} +13^{2} \\x= \sqrt{144+169}\\x= \sqrt{313}[/tex]
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Respuesta:
x= 29
x=[tex]\sqrt{313}[/tex]
Explicación paso a paso:
[tex]x^{2} = 21^{2} +20^{2} \\x= \sqrt{441+400} \\x= \sqrt{841}\\x=29\\[/tex]
[tex]x^{2} =12^{2} +13^{2} \\x= \sqrt{144+169}\\x= \sqrt{313}[/tex]