I have not clue how to do it! can someone help me?
Use the Rational Zero Test to list all possible rational zeros of
f(x)=4x^5-8x^4-5x^3+10x^2+x-2
The rational root theorem tell you that all rational roots of a polynomial function with integer coefficients are of the form where is a factor of the constant term and a factor of the coefficient of the higest power of the variable.
So in this case the rational roots are among:
or:
.