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Multiplica todo por x^2
Factoriza
(x-1)(x+5)=0
Los valores de las dos raíces son
x=1, x=-5
COMPROBACIÓN
1+4-5=0
1-4/5-5/25=1-4/5-1/5=0
x² (1 +4/x -5/x²) = 0 (x²)
x² +4x²/x -5x²/x² = 0
x² +4x -5 = 0 → Trinmio de la forma x² +bx +c
(x + 5 ) ( x -1 ) = 0
x +5 = 0 x -1 = 0
x = -5 x = 1
C.S. = (-5: 1)