Найдите разность многочленов:

\(\displaystyle \left(20x^{\,2}y^{\,3}+35yz^{\,4}+8x^{\,4}y^{\,5}z+21x^{\,3}y\,\right)-\left(17x^{\,2}y^{\,3}+20yz^{\,4}+6x^{\,4}y^{\,5}z+70yz^{\,5}\right)=\)

\(\displaystyle =\)[ ]\(\displaystyle x^{\,2}y^{\,3}+\)[ ]\(\displaystyle yz^{\,4}+\)[ ]\(\displaystyle x^{\,4}y^{\,5}z+21x^{\,3}y-70yz^{\,5}\)