SOLUTION: Your help is needed to solve. Thanks!
Solve logarithmic equation. Express all solutions in exact form. Support your solutions by using a calculator.
Log sub 5(x + 2) + lo
Algebra ->
Quadratic-relations-and-conic-sections
-> SOLUTION: Your help is needed to solve. Thanks!
Solve logarithmic equation. Express all solutions in exact form. Support your solutions by using a calculator.
Log sub 5(x + 2) + lo
Log On
Question 819092: Your help is needed to solve. Thanks!
Solve logarithmic equation. Express all solutions in exact form. Support your solutions by using a calculator.
Log sub 5(x + 2) + log sub 5(x – 2) = 1
You can put this solution on YOUR website! Log sub 5(x + 2) + log sub 5(x – 2) = 1
Log sub 5(x + 2)(x – 2) = 1
(x + 2)(x – 2) = 5^1
(x + 2)(x – 2) = 5
x^2-4 = 5
x^2 = 9
x = {-3, 3}
but the -3 is an extraneous solution, throw it out leaving:
x = 3
