Respuestas

2014-02-02T11:42:00+01:00
2/(x^2-2x+1) -  x/(x^2+4x-5) + 1/(x^2-25)=0

2/(x-1)(x-1) - x/(x+5)(x-1) + 1/(x+5)(x-1) =0
multiplicamos por (x-1)y tenemos:
2/(x-1) - x/(x+5) + 1/(x+5) =0
2/(x-1) = x/(x+5) - 1/(x+5)
2/(x-1) = x-1/x+5
2x+10=x^2+2x+1
x^2-9=0
x=3

2014-02-02T13:31:50+01:00