Question

Solve: 2 ln 3 = ln(x - 4)

x = 9

x = 10

x = 13

Answer 1

2 ln 3 = ln(x − 4)

Use the log property 2 ln 3 = ln(3^2) = ln 9, so ln(x − 4) = ln 9 ⇒ x − 4 = 9 ⇒ x = 13.

Only x = 13 is correct.