Question

X^3+2x^2+3x-22=0 помогите

Answer 1

$x^3+2x^2+3x-22=0 \ \ x^3-2x^2+4x^2-8x+11x-22=0 \ \ x^2(x-2)+4x(x-2)+11(x-2)=0 \ \ (x-2)underbrace{ (x^2+4x+11)}_{xnotin R}=0 \ \ x-2=0 \ \ x=2$