Respuesta:
(x+1)*x*(x-1)!/(x-1)=42
(x+1)*X=42
X²+x=42
X²+7x-6x-42=0
X*(x+7)-6(x+7)=0
(x+7)*(x-6)=0
X+7=0
X-6=0
X=-7
X=6
(-7+1)!/(-7-1)!=42
(6+1)!/(6-1)!=42
42=42
X≠-7
Solución:
La ecuación no posee solución.
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Respuesta:
(x+1)*x*(x-1)!/(x-1)=42
(x+1)*X=42
X²+x=42
X²+7x-6x-42=0
X*(x+7)-6(x+7)=0
(x+7)*(x-6)=0
X+7=0
X-6=0
X=-7
X=6
(-7+1)!/(-7-1)!=42
(6+1)!/(6-1)!=42
42=42
X≠-7
X=6
Solución:
X=6
La ecuación no posee solución.