/ ____________\ / ____________\ / ____________\ / ____________\ | / ____ | | / ____ | | / ____ | | / ____ | | / 7 \/ 33 | | / 7 \/ 33 | | / 7 \/ 33 | | / 7 \/ 33 | |x + / - - ------ |*|x - / - - ------ |*|x + / - + ------ |*|x - / - + ------ | \ \/ 2 2 / \ \/ 2 2 / \ \/ 2 2 / \ \/ 2 2 /
(((x + sqrt(7/2 - sqrt(33)/2))*(x - sqrt(7/2 - sqrt(33)/2)))*(x + sqrt(7/2 + sqrt(33)/2)))*(x - sqrt(7/2 + sqrt(33)/2))