Polynomial function that has the zeros -5 and 4i

is the required polynomial function of the form

Step-by-step explanation:

The given zeroes of the polynomial is -5 and 4i.

It implies, the roots of the polynomial is (x+5) and (x-4i)

Now, The Polynomial = Product of all its roots

So, here P(x) =  ( x + 5)( x - 4i)

or,

⇒

Hence, P(x) is the required polynomial function of the form

if a = 1,   and b = 2, then the answer is 47.99999999. if you round that to the nearest whole number, the answer is 48.

if you was gonna solve for a, a is a   < -12