Question

Ma puteți ajuta mai departe dau coroana​

Answer 1

$\frac{x}{x-1} :\frac{x^{2} }{x*1} =\frac{x-1}{x} *\frac{x-1}{x^{2} } \\\\\frac{x}{x-1} *\frac{x*1}{x^{2} } =\frac{x-1}{x} *\frac{x-1}{x^{2} } \\\\\frac{x^{2} }{x} =\frac{x^{2} -2}{x^{3} } \\\\\frac{x^{2} }{x} =\frac{-2}{x} \\\\x=\frac{-2}{x} \\x^{2} =-2\\x=-\sqrt{2}$