Найду корень уравнения: x+x^7=180
x1 = 2.09630753124367
x2 = -1.89405045343393 - 0.913801776206214*I
x3 = -1.89405045343393 + 0.913801776206214*I
x4 = -0.464108060619456 - 2.04869921357155*I
x5 = -0.464108060619456 + 2.04869921357155*I
x6 = 1.31000474843155 - 1.63828762184379*I
x7 = 1.31000474843155 + 1.63828762184379*I
сумма
2.09630753124367 + -1.89405045343393 - 0.913801776206214*I + -1.89405045343393 + 0.913801776206214*I + -0.464108060619456 - 2.04869921357155*I + -0.464108060619456 + 2.04869921357155*I + 1.31000474843155 - 1.63828762184379*I + 1.31000474843155 + 1.63828762184379*I
=
4.44089209850063e-16
произведение
2.09630753124367*(-1.89405045343393 - 0.913801776206214*I)*(-1.89405045343393 + 0.913801776206214*I)*(-0.464108060619456 - 2.04869921357155*I)*(-0.464108060619456 + 2.04869921357155*I)*(1.31000474843155 - 1.63828762184379*I)*(1.31000474843155 + 1.63828762184379*I)
=
180.000000000000
x1 = -0.464108060619456 + 2.04869921357155*i
x2 = -0.464108060619456 - 2.04869921357155*i
x3 = 2.09630753124367
x4 = 1.31000474843155 - 1.63828762184379*i
x5 = 1.31000474843155 + 1.63828762184379*i
x6 = -1.89405045343393 + 0.913801776206214*i
x7 = -1.89405045343393 - 0.913801776206214*i