A polynomial function that has roots 1 and 3 + i. The complex conjugates theorem states that must also be a (blank) root.

Complex roots come in pairs

if you have a root of 3+i you must have a root of 3-i

in Edge: Second question: The factors of the polynomial are (X-1) [X - (3+i) ] [X - (3-i) ]

in Edge: Third question: The polynomial function of least degree with a leading coefficient of 1 is: A = - 7 B = 16 C = - 10