Question

Решите уравнение
2х^3+8х=х^2+4

Answer 1

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