Respuesta:
a = 1
Explicación paso a paso:
a(a + 8) + 47 = (a + 7)(a + 6)
a² + 8a + 47 = a² + 6a + 7a + 42
8a + 47 = 13a + 42
8a - 13a = 42 - 47
-5a = -5
a = -5 / -5
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Respuesta:
a = 1
Explicación paso a paso:
a(a + 8) + 47 = (a + 7)(a + 6)
a² + 8a + 47 = a² + 6a + 7a + 42
8a + 47 = 13a + 42
8a - 13a = 42 - 47
-5a = -5
a = -5 / -5
a = 1