2 25*n - (7 + 5*n)*(7 - 5*n)
25*n^2 - (7 + 5*n)*(7 - 5*n)
/ ___\ / ___\ | 7*\/ 2 | | 7*\/ 2 | 1*|n + -------|*|n - -------| \ 10 / \ 10 /
(1*(n + 7*sqrt(2)/10))*(n - 7*sqrt(2)/10)
2 -49 + 50*n
-49 + 50*n^2
25.0*n^2 - (7.0 + 5.0*n)*(7.0 - 5.0*n)