Question

1-x/x+4 - 9/x = 1
Найдите x​

Answer 1

$\frac{1-x}{x+4} -\frac{9}{x}=1\\x\neq  0\\x\neq -4\\x(1-x)-9(x+4)-x(x+4)=0\\x-x^2-9x-36-x^2-4x=0\\x^2+6x+18=0\\D=36-72<0$

Корней нет