/ ______________\ / ______________\ / ______________\ / ______________\ | / _____ | | / _____ | | / _____ | | / _____ | | / 15 \/ 185 | | / 15 \/ 185 | | / 15 \/ 185 | | / 15 \/ 185 | |x + / -- - ------- |*|x - / -- - ------- |*|x + / -- + ------- |*|x - / -- + ------- | \ \/ 2 2 / \ \/ 2 2 / \ \/ 2 2 / \ \/ 2 2 /
(((x + sqrt(15/2 - sqrt(185)/2))*(x - sqrt(15/2 - sqrt(185)/2)))*(x + sqrt(15/2 + sqrt(185)/2)))*(x - sqrt(15/2 + sqrt(185)/2))