Question

срочно и правильно))))))))))))))))))))))))))

Answer 1

ОДЗ: x ≠ 0;

$frac{4}{x} + 5 = frac{1}{ x^{2}} frac{4 + 5x}{x} = frac{1}{ x^{2}}$
$frac{5 x^{2} + 4x - 1 }{ x^{2}} = 0$
$5 x^{2} + 4x - 1 = 0$

D = 16 + 20 = 36
x1 = (-4 +6)/10 = 0.2
x2 = (-4 - 6)/10 = -1

Answer 2

$frac{4}{x} +5= frac{1}{x^2} \ 4x+5x^2=1 \ x neq 0 \ 5x^2+4x-1=0 \ 5-4-1=0 \ x_1=-1 \ x_2=- frac{-1}{5}= frac{1}{5}=0.2$
Ответ: -1; 0,2