/ ____________\ / ____________\ / ______________\ / ______________\ | / ____ | | / ____ | | / ____ | | / ____ | | / 7 \/ 57 | | / 7 \/ 57 | | / 7 \/ 57 | | / 7 \/ 57 | |x + I* / - + ------ |*|x - I* / - + ------ |*|x + / - - + ------ |*|x - / - - + ------ | \ \/ 2 2 / \ \/ 2 2 / \ \/ 2 2 / \ \/ 2 2 /
(((x + i*sqrt(7/2 + sqrt(57)/2))*(x - i*sqrt(7/2 + sqrt(57)/2)))*(x + sqrt(-7/2 + sqrt(57)/2)))*(x - sqrt(-7/2 + sqrt(57)/2))