Question

Решите уравнение
2х^3+8х=х^2+4

Answer 1

$2x^3+8x=x^2+4 \\ 2x(x^2+4)=x^2+4 \\ 2x(x^2+4)-(x^2+4)=0 \\ (x^2+4)(2x-1)=0 \\ \\ x^2+4=0 \\ x \in \emptyset \\ \\ 2x-1=0 \\ x= \frac{1}{2}$