I need help for my homework can someone tell me how to do x 3 - x ​2 =55

x^3 - x^2 =55   subtract 55 from both sides

x^3 - x^2  - 55   = 0

This would be difficult to solve algeraically.....here are the solutions :

http://www.wolframalpha.com/input/?i=x%5E3+-+x%5E2++-+55+++%3D+0

x ≈ 4.1672

x ≈ -1.5836 - 3.2696 i

x ≈ -1.5836 + 3.2696 i

thanks