What is the number of roots of the polynomial F(z) = 4z3-8z2-z+2, lying outside the unit circle?
A. 0
B. 1
C. 2
D. 3
Answer:B
What is the number of roots of the polynomial F(z) = 4z3-8z2-z+2, lying outside the unit circle?
A. 0 B. 1 C. 2 D. 3
Explanation: Factorizing F (z) and then the factors are the roots which here come out to be 3.