Solve for nnn: n3−9n>0n^3 - 9n > 0n3−9n>0.
−3<n<0-3 < n < 0−3<n<0 or n>3n > 3n>3
n>3n > 3n>3
0<n<30 < n < 30<n<3
n<−3n < -3n<−3 or 0<n<30 < n < 30<n<3