Question

Помогите преобразовать:

-5x^3+x^2+x+3=0

Answer 1

$-5x^2+x^2+x+3=0\\5x^3-x^2-x-3=0\\(x-1)(5x^2+4x+3)=0\\x-1=0=>x=1\\5x^2+4x+3=0\\D=-44<0\\x=1$