Question

Решите уравнение 6x+2/x=7

Answer 1

$6x + \frac{2}{x} = 7$
$6x + \frac{2}{x} - 7 = 0$
$\frac{6x + 2 - 7x}{x} = 0$
x не=0
6x+2-7x=0

D=49-4*6*2=1
$x = \frac{ 7 + 1}{12} = \frac{2}{3}$
$x = \frac{7 - 1}{12} = \frac{1}{2}$