mepomero wrote:From Descarte's rule of signs, conclude that the equation x^(2n) -1=0 has 2n-2 imaginary roots
You know that the equation must have 2n roots, due to the degree. What real roots did you find when you applied graphing, experience, or the Rational Roots Test
? What did you determine when you applied Descartes' Rule of Signs
to this polynomial equation? Thank you.