Answer:
The given function is
[tex]f(x)= x^4-3x^3+2x^2-7x-11[/tex]
By rational root test, the roots of the polynomial can be
1, -1, 11, and -11.
When you will graph the polynomial, you will find that there are two real roots and two imaginary roots.
By, Graphically two real roots are = 3.329,& -0.911.
These two roots are near to three decimal places.
