7log(x-5)+7log(x+1)=1

⁷㏒(x-5)+⁷㏒(x+1) = 1
⁷㏒(x-5)(x+1) = ⁷㏒7      ( ⁷㏒ nya coret )
(x-5)(x+1) = 7
x²-4x-5-7 = 0
x²-4x-12 = 0
(x-6)(x+2) = 0
x=6 atau x=-2