[tex]x\not=0,1\\\\1,75\cdot10^{-5}=\dfrac{x^2}{0,1-x}\Big|\cdot (0,1-x)\\1,75\cdot10^{-6}-1,75\cdot10^{-5}\cdot x=x^2\Big|\cdot 4\cdot10^6\\7-70x=4000000x^2\\4000000x^2+70x-7=0\\\Delta=70^2-4\cdot 4000000\cdot(-7)=4900+112000000=112004900\\\sqrt{\Delta}=\sqrt{112004900}=10\sqrt{1120049}\\\\x_1=\dfrac{-70-10\sqrt{1120049}}{2\cdot4000000}=-\dfrac{7+\sqrt{1120049}}{800000}\\x_2=\dfrac{-70+10\sqrt{1120049}}{2\cdot4000000}=-\dfrac{7-\sqrt{1120049}}{800000}\\[/tex]
