Разложите на множители:

\(\displaystyle 56u^{\,9}z^{\,6}+32u^{\,5}v^{\,9}z^{\,13}-21u^{\,4}v^{\,3}-12v^{\,12}z^{\,7}=\big(\)[ ]\(\displaystyle \big)\big(\)[ ]\(\displaystyle \big)\)