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(1/x-6 -1/x+1)*(xla a 2-5x-6)

Răspuns :

(-6+1)(x^2-5x-6)=(-5)(x^2-5x-6)=(-5)*(x+1)*(x-6)=(x+1)(30-5x)

x^2-5x-6=0
delta=49
delta>0 => x1=-1
                 x2=6

R-s: (x+1)(30-5x)