Найдите разность многочленов: \( \left(20z^{\,3}+25z^{\,2}-14z-71\right)-\left(29z^{\,3}-19z^{\,2}+7z-90\right)=\) \( =\)?\( z^{\,3}\)?\( z^{\,2}\)?\( z\)?

Задание

Найдите разность многочленов:

\(\displaystyle \left(20z^{\,3}+25z^{\,2}-14z-71\right)-\left(29z^{\,3}-19z^{\,2}+7z-90\right)=\)

\(\displaystyle =\)[?||-][ ]\(\displaystyle z^{\,3}\)[?|+|-][ ]\(\displaystyle z^{\,2}\)[?|+|-][ ]\(\displaystyle z\)[?|+|-][ ]