7,7(2-\sqrt5)\\\\T.k.\; \sqrt5>\sqrt4\; \to \; \sqrt5>2\; \to 2-\sqrt5<0\\\\x<7,7\; (menyaem\; znak)\\\\Naibolshee\; celoe\; \; x=7" alt="x(2-\sqrt5)>7,7(2-\sqrt5)\\\\T.k.\; \sqrt5>\sqrt4\; \to \; \sqrt5>2\; \to 2-\sqrt5<0\\\\x<7,7\; (menyaem\; znak)\\\\Naibolshee\; celoe\; \; x=7" align="absmiddle" class="latex-formula">