How to solve #x^3-3x-2=0# ?
2 Answers
Jun 3, 2018
The roots are
Explanation:
It is easy to see by inspection that
To find the other roots let us rewrite
Thus, our equation becomes
which obviously has roots
We can also see it in the graph:
graph{x^3-3x-2}
Jun 4, 2018
Explanation:
Thus