Respuesta:
Solución '
[tex] {a}^{2} - {b}^{2} = 16[/tex]
[tex](a + b)(a - b) = 16[/tex]
[tex](a + b)(2) = 16[/tex]
[tex]a + b = \frac{16}{2} [/tex]
[tex]a + b = 8[/tex]
[tex]b = 8 - a[/tex]
Saludos
Explicación paso a paso:
a² - b² = 16
(a + b) (a - b) = 16
(a + b) (2) = 16
(a + b) = 8
Luego;
a + b = 8 | -
a - b = 2 ↓
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2b = 6
b = 3
