Question

How many imaginary and real zeros the function have?
f(x)=x^4+12x^3+37x^2+12x+36

Answer 1

Descartes rule of signs, first find out # of positive and negative real zeroes

Answer 2

Is it 4 imaginary?

Answer 3

u got 0 positive roots, and 4/2/0 negative zeroes is it ?

Answer 4

if u see 4 sign changes in f(-x), then there CAN be 4 or 2 or 0 negative zeroes.