(3) the polynomial has degree 3. If it were a complex coefficient polynomial, then the answer is 2.
Step-by-step explanation:
I am assuming it is a real coefficient polynomial, otherwise the answer will be 2. Since 3i is a root, then so is its conjugate -3i, therefore the polynomial is a multiple of (x-(-1)) *(x-3i) * (x-(-3i)) = (x+1) * (x²+9), which has real coefficients. Hence, its degree is atleast 3. Option (3) is correct
A number that has a negative sign in front of it, opposite from positive numbers, and below zero are all phrases that can describe negative numbers. Hope this helps.
