x3-125 Follow the steps for graphing a rational function to graph the function H(x)=- 2 x -64 If needed, first write the given function as a single rational expression. Then, factor the numerator and denominator of H(x). Select the correct choice complete your choice. A. H(x)= (x-5) (x2+5x+25) (x-8)(x+8) (Type your answer in factored form. Do not simplify.) OB. H(x) cannot be factored further. What is the domain of H(x)? (-00,-8)u(-8,8)U(8,00) (Simplify your answer. Type your answer in interval notation. Use integers or fractions for any numbers in the expression.) Write H(x) in lowest terms. Select the correct choice and, if necessary, fill in the answer box to complete your choice. OA. H(x)= (Simplify your answer.) OB. H(x) is already in lowest terms.