Respuesta:
15
Explicación paso a paso:
Datos: AB=5
Hacemos: BC = m; CD = n
Entonces:
(AB)(BD) = (AC)(CD)
5 (m + n) = (5 + m) (n)
5m + 5n = 5n + mn
5m = 5n + mn - 5n
5m = mn
5 = n
Luego:
2 (CD) + 5 = 2 (5) + 5 = 15
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Respuesta:
15
Explicación paso a paso:
Datos: AB=5
Hacemos: BC = m; CD = n
Entonces:
(AB)(BD) = (AC)(CD)
5 (m + n) = (5 + m) (n)
5m + 5n = 5n + mn
5m = 5n + mn - 5n
5m = mn
5 = n
Luego:
2 (CD) + 5 = 2 (5) + 5 = 15