x^4+x^2+1=x^4+2x^2+1-x^2=(x^2+1)^2-x^2=(x^2-x+1)(x^2+x+1)
x4+2*0.5x2+0.25+0.75=(x2+0.5)2+(√3/2)2=(x2+0.5+√3/2i)((x2+0.5-√3/2i) i=√-1 - мнимая единица