Find the open interval of convergence of the power series?m=1 (x ? 8)^m /(m+8)7^mYour answer should be an interval of the form (a, b). Enter

Find the open interval of convergence of the power series?m=1 (x ? 8)^m /(m²+8)7^mYour answer should be an interval of the form (a, b). Enter the values of a and b below.a =b=