How do you solve #x^4+3x^3-4x^2+12=0#?
1 Answer
Oct 27, 2017
Since this polynomial has no easily determined solutions and no further clarification was provided, I've employed an "engineer"-type solution to clear out this question.
Explanation:
Note that I dropped the
Using a graphing package I can establish the x-intercepts at approximately
Based on these values
We could now test using values
but using the graph, this is not really necessary.
Here is the graph at a moderate scale (I had to blow it up significantly to get approximations for the x-intercept values):