:ind a polynomial function of least degree having only real coefficients. a leading coefficient of 1, and zeros of 3-i and 6-21 :ind a polynomial function of least degree having only real coefficients. a leading coefficient of 1, and zeros of 4 and 3+i. :ind a polynomial function P of the lowest possible degree, having real coefficients, a leading coeflicient of 1, and with the given zeros. 1+3, -2. and 1 =ind a polynomial equation with real coefficients that has the given zeros. 3-2i and 3+2i =in a polynomial function fix] of degree 3 with real coefficients that satisfies the following conditions. Zero of O and zero of 2 having multiplicity 2; f(3)=15