1 --------------- 2 4 3 + 2*x + 5*x
1/(3 + 2*x^2 + 5*x^4) при x = -4
1/(3 + 2*x^2 + 5*x^4)
1/(3 + 2*(-4)^2 + 5*(-4)^4)
1/1315
1/(3.0 + 2.0*x^2 + 5.0*x^4)