Respuesta:
5
Explicación paso a paso:
[tex]a^{2} +b^{2} = 169\\[/tex]
aplicamos binomio al cuadrado
[tex](a+b)^{2} = a^{2} +b^{2} +2ab\\\\\\\\\(a+b)^{2} = 169+2ab\\(a+b)^{2} = 169 +2(-72)\\(a+b)^{2} = 125\\a+b = \sqrt{25} \\a+b = 5[/tex]
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Respuesta:
5
Explicación paso a paso:
[tex]a^{2} +b^{2} = 169\\[/tex]
aplicamos binomio al cuadrado
[tex](a+b)^{2} = a^{2} +b^{2} +2ab\\\\\\\\\(a+b)^{2} = 169+2ab\\(a+b)^{2} = 169 +2(-72)\\(a+b)^{2} = 125\\a+b = \sqrt{25} \\a+b = 5[/tex]