Question

State the number of complex zeros and the possible number of real and imaginary zeros for each
function.

f (x) = x^2 + 6x − 38

Answer 1

Do the quadratic formula and find the roots. The roots will tell you which are complex and which aren't

Answer 2

wait, what?

Answer 3

Two complex zeros. Do you know how to use the rule of signs? Go to this link to get an explanation: http://www.purplemath.com/modules/drofsign.htm

Answer 4

The discriminant b^2-4ac is positive so 2 real roots is all.