Solution (x + 21)/((x - 3) * (x + 3) ^ 2) + 9/(x - 1) DECODER Riddle: I have a head and a tail that will never meet. Having too many of me is always a treat. What am I? 7x - 20 x ^ 2 + x (x ^ 2 - 16)/3 + (x + 4)/21 (21x ^ 2)/(3x + 6) * (x ^ 2 + 3x + 2)/(7x) 4/(x ^ 2 - 9) - 3/(x ^ 3 + 6x + 9) O 1/x + 1/(u ^ 2 - x) с Given Perform the indicated operations to find the answer for the given riddle. Write the corresponding letter of each equations in the boxes below that corresponds to your answer. Show your complete solution. N​