Wikipedia has a pretty comprehensive article regarding how to solve a cubic algebraically.
Cubic function - Wikipedia, the free encyclopedia
I've got this here . . . x^3 +7x -1 = 0.
I know it equals x = 0.142 approx, but I found that out by graphing it. I'm stumped as to how to solve it algebraically.
Any help is much appreciated.
Thanks!
Wikipedia has a pretty comprehensive article regarding how to solve a cubic algebraically.
Cubic function - Wikipedia, the free encyclopedia