Question

решите уравнение, пжжжжжжжжж

Answer 1

$x+2= \frac{20x+7}{x}$
х(х+2)=20х+7
$x^{2} +2x=20x+7$
$x^{2}-18x-7=0$
$D=352$
$x_{1} =\frac{18+2 \sqrt{88}} {2}= \frac{2 (9+\sqrt{88})}{2}= 9+\sqrt{88}$
$x_{2} =\frac {2 (9- \sqrt{88})}{2}=9- \sqrt{88}$