Respuesta:
-4 y/o -5
Explicación paso a paso:
x²+9x+20=0
x 4 = 4x +
x 5 = 5x
-----
9x
(x+4)(x+5)
x+4 =0 x+5 = 0
x = -4 x= -5
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Respuesta:
-4 y/o -5
Explicación paso a paso:
x²+9x+20=0
x 4 = 4x +
x 5 = 5x
-----
9x
(x+4)(x+5)
x+4 =0 x+5 = 0
x = -4 x= -5