2 / 2 \ \x + x + 1/
(x^2 + x + 1)^2 при x = 1/4
(x^2 + x + 1)^2
((1/4)^2 + (1/4) + 1)^2
((1/4)^2 + 1/4 + 1)^2
441/256
(1.0 + x + x^2)^2
2 (1 + x*(1 + x))
4 3 2 1 + x + 2*x + 2*x + 3*x