Question

(12х+12)/(7x+5)=√350

Answer 1

Ответ:

х ≈ - 0,69

ответ:

$x = \frac{60 \sqrt{14 } - 6053}{8503}$

Answer 2

Ответ:

$\dfrac{12x+12}{7x+5}=\sqrt{350}\ \ ,\ \ \ \ ODZ:\ x\ne -\dfrac{5}{7}\ \ ,\\\\\\12x+12=\sqrt{350}\cdot (7x+5)\\\\12x-7\sqrt{350}\, x=5\sqrt{350}-12\\\\x\cdot (12-35\sqrt{14})=25\sqrt{14}-12\\\\x=\dfrac{25\sqrt{14}-12}{12-35\sqrt{14}}\\\\\\x=\dfrac{(25\sqrt{14}-12)(12+35\sqrt{14})}{144-17150}\\\\x=\dfrac{300\sqrt{14}+12250-144-420\sqrt{14}}{17006}\\\\x=\dfrac{12106-120\sqrt{14}}{17006}\\\\x=\dfrac{6053-60\sqrt{14}}{8503}\approx -0,6855$