Combine into one log:

Question

log
√

x + 1

+ 9 log x
i.e. rewrite as an expression of the form log u, where u is a function of x.

Answer 1

did you mean:
log √(x+1) + 9logx ??
then
= log √(x+1) + log x^9
= log ( x^9 √(x+1) )