Question

Solve 2 log(x) + log(5) = log (80) using the one-to-one property.

Answer 1

x=4

Explanation:

2log(x)+log(5)=log(80)

log(x^2)+log(5)=log(80)

log(5x^2)=log(80)

5x^2 =80

x^2 =80/5

x^2=16 , taking square root both sides

x=√16

=4