Express as a single logarithm

Question

ln(a)+1/2ln(b)

2ln4-ln2

Answer 1

ln a + (1/2) ln b
= lan a + ln )b^(1/2))
= ln (a√b)

you try the second, and let me know what you got

Answer 2

2ln4-ln2
=ln(16)-ln2
=ln(16/2)
=ln8?

Answer 3

correct

Answer 4

Thank you =)

Answer 5

We are asked to express 2+ln 2 as a single logarithm.Can somebody help me?