(2 root 2 + 5 root 3)(2 root 5 - 3 root 3)

Dear student
Since you have not mentioned anything in the question , so assuming we have to multiply the expressions.
$$\begin{gathered} \mathrm{We} \mathrm{have} \\ \left(2\sqrt{2}+5\sqrt{3}\right)\left(2\sqrt{5}-3\sqrt{3}\right) \\ =2\sqrt{2}\left(2\sqrt{5}-3\sqrt{3}\right)+5\sqrt{3}\left(2\sqrt{5}-3\sqrt{3}\right) \\ =4\sqrt{10}-6\sqrt{6}+10\sqrt{15}-45 \end{gathered}$$
 
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