Question

Write the following expression as a single logarithm:

ln (x + 2) + ln (x – 2) – 3 ln (x + 5)

Answer 1

ln (x + 2) + ln (x – 2) – 3 ln (x + 5)

Answer 2

ln[(x^2 - 4)/(x+5)^3]

Using form  :-

ln a + ln b= ln(ab); and ;

ln a - ln b= ln(a/b)