The roots of the equation p(x) = x⁴- 4x³- x² + 4x is
x1 = -1
x2 = 0
x3 = 1
x4 = 4
How to find the roots
The roots of a polynomial is the value of the x variables of the polynomial when the equation is set to zero.
Graphically, this roots of the equation are points where the equation intercepts the x-axis.
In the graph, these points are
A (-1, 0)
B (0, 0)
C (1, 0)
D (4, 0)