Question 876350
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Hi
x = -1 is a root (that one can do in one's head at least :)
Using synthetic divis1on
-1	1	1	-3	-7	-4
		-1	0	3	4
	1	0	-3	-4	0
       (x^3 - 3x - 4) (Using solver)

  x = -1,  2.196,  1.098+.785i, 1.098-.785i