Question

Please help :))
lg(x-5)*lg(x+5)=lg(x^2-25)-1

Answer 1

Answer:

log(x-5)log(x+5)=log(x^2-25)-1

log(x^2-5^2)=log(x^2-5^2)-1 ;(a^2-b^2)=(a-b)(a+b)

=-1