³log (x²-1) - ³log (5x+5)=0 Tolong yaa

³log ( x²-1) - ³log (5x+5) = 0
pindah ruas :

³log ( x²-1) = ³log (5x+5)
pers : ᵃlog f(x) = ᵃlog g(x)  <=> f(x)=g(x)

f(x)=g(x)
x²-1 = 5x+5
x²-5x-1-5 = 0
x²-5x-6=0
(x-6) (x+1)=0
⇒x-6=0        ⇒x+1=0
⇒x=6              x= -1