Use Descartes' rule of signs to determine the different possibilities for the numbers of positive, negative, and nonreal complex zeros for the
following function.
f(x) = 5x6 - 9x5 + 6x4 + 2x³-4x²+x+7
The possible number of positive real zeros is 4,2,0.
(Type a whole number. Use a comma to separate answers as needed.)
The possible number of negative real zeros is 2,0.
(Type a whole number. Use a comma to separate answers as needed.)
The possible number of nonreal complex zeros is ???