<prompt> Rahisisha usemi ufuatao: x5x4x10-x52x4-x312. Eleza jibu lako kama polynomial na digrii za masharti katika utaratibu wa kupungua.  <response>: Tuna x5 x4 x10 - x5 x2 x3 12 1-1 x5 1-2 x4 0- -1 x3 1-0 x 10-12 - x4 x3 x-2 