Найдите пропущенные значения:

\(\displaystyle (13z^{\,4}-9z^{\,17})(8z^{\,11}-11z^{\,9})=\)

\(\displaystyle =\)[?||-][ ]\(\displaystyle (8z^{\,11}-11z^{\,9})\)[?|+|-][ ]\(\displaystyle (8z^{\,11}-11z^{\,9})\)