0.5 + square root of 13 + 8:2-6 square root of 5
$${\mathtt{0.5}}{\mathtt{\,\small\textbf+\,}}{\sqrt{{\mathtt{13}}}}{\mathtt{\,\small\textbf+\,}}{\mathtt{8}} = {\mathtt{8.5}}{\mathtt{\,\small\textbf+\,}}{\sqrt{{\mathtt{13}}}}$$
$$\mathrm{\ }$$
$${\mathtt{8.5}}{\mathtt{\,\small\textbf+\,}}{\sqrt{{\mathtt{13}}}}$$ : $${\mathtt{2}}{\mathtt{\,-\,}}{\mathtt{6}}{\mathtt{\,\times\,}}{\sqrt{{\mathtt{5}}}}$$
0.5 + square root of 13 + 8:2-6 square root of 5
$${\mathtt{0.5}}{\mathtt{\,\small\textbf+\,}}{\sqrt{{\mathtt{13}}}}{\mathtt{\,\small\textbf+\,}}{\mathtt{8}} = {\mathtt{8.5}}{\mathtt{\,\small\textbf+\,}}{\sqrt{{\mathtt{13}}}}$$
$$\mathrm{\ }$$
$${\mathtt{8.5}}{\mathtt{\,\small\textbf+\,}}{\sqrt{{\mathtt{13}}}}$$ : $${\mathtt{2}}{\mathtt{\,-\,}}{\mathtt{6}}{\mathtt{\,\times\,}}{\sqrt{{\mathtt{5}}}}$$