Question

Хелп дам 80 баллов спать хочу(

Answer 1

$\displaystyle\bf\\1)\\\\\frac{a}{\sqrt{b} } =\frac{a\cdot\sqrt{b} }{\sqrt{b}\cdot\sqrt{b} } =\frac{a\sqrt{b} }{b} \\\\2)\\\\\frac{5}{x\sqrt{x} } =\frac{5\cdot\sqrt{x} }{x\sqrt{x}\cdot\sqrt{x} } =\frac{5\sqrt{x} }{x^{2} } \\\\3)\\\\\frac{6}{\sqrt{17} } =\frac{6\cdot\sqrt{17} }{\sqrt{17}\cdot\sqrt{17} } =\frac{6\sqrt{17} }{17} \\\\4)\\\\\frac{12}{\sqrt{6} } =\frac{12\cdot\sqrt{6} }{\sqrt{6}\cdot\sqrt{6} } =\frac{12\sqrt{6} }{6}=2\sqrt{6}$