Let n≥3 be an integer. Let P denote the set of vertices of a regular n-gon on the plane. A polynomial f(x,y) of two variables with real coefficients is called <spanclass=′latex−italic′>regular</span> if P={(u,v)∈R2∣f(u,v)=0}. Find the smallest possible value of the degree of a regular polynomial.Proposed by Navid Safaei algebraPolynomialspolynomial