Question

please help fan and medal!!!!!!!!!!!!!!

Answer 1

Which polynomial will definitely have nonreal zeros?
Hint: Use Descartes's rule of signs.


x3 − 2x2 − x − 2



x3 − 2x2 + x − 2



x4 + 8x2 + 16



x4 − 8x2 + 16

Answer 2

@mathstudent55

Answer 3

Do you know how to use the hint?

Answer 4

b

Answer 5

http://www.purplemath.com/modules/drofsign.htm