can you explain why? and also use their definitnons$($little $0,$ little $\backslash$omega and $\backslash$theta $)$ to show why?

Which of these is true, for functions:

f$($n$)=(2$n $+5)*($n$^(0\mathrm{.}5)+1)*$ n$^(0\mathrm{.}5)$

g$($n$)=($n $+$ log n$)^(2)$

f$($n$)=$ o$($g$($n$))$

f$($n$)=\backslash$theta $($g$($n$))$

f$($n$)=\backslash$omega $($g$($n$))$

None of these is true