-9-4\sqrt{5}" alt="(2-\sqrt{5})x<2+\sqrt{5} |*(2+\sqrt{5})\\(2-\sqrt{5})(2+\sqrt{5})x<(2+\sqrt{5})^{2}\\(2^{2}-(\sqrt{5})^{2})x<4+4\sqrt{5}+5\\(4-5)x<9+4\sqrt{5} \\-x<9+4\sqrt{5} |*(-1)\\x>-9-4\sqrt{5}" align="absmiddle" class="latex-formula">≈ - 17,944271909999158785636694674925
Ответ: - 17