Question

1/3х²+27=0 решите уравнение

Answer 1

ОДЗ:
$3x^2 \neq 0 \\ x \neq 0$
$\frac{1}{3x^2} +27 = 0 \\ \frac{1}{3x^2} = -27 \\ -81x^2=0 \\ x= 0 \\ x \in \varnothing$