SOLUTION: log8(x^2-30)=log8(x)

Algebra ->  Logarithm Solvers, Trainers and Word Problems -> SOLUTION: log8(x^2-30)=log8(x)      Log On


   



Question 601569: log8(x^2-30)=log8(x)
Answer by nerdybill(7384) About Me  (Show Source):
You can put this solution on YOUR website!
log8(x^2-30)=log8(x)
x^2-30 = x
x^2-x-30 = 0
(x+5)(x-6) = 0
x = {-5, 6}
we can throw out the negative solution (extraneous) leaving:
x = 6