Найдите разность многочленов:
\(\displaystyle \left(-17y^{\,3}-6y^{\,2}+15y-23\right)-\left(-2y^{\,3}+4y^{\,2}-3y+53\right)=\)
\(\displaystyle =\)[?||-][ ]\(\displaystyle y^{\,3}\)[?|+|-][ ]\(\displaystyle y^{\,2}\)[?|+|-][ ]\(\displaystyle y\)[?|+|-][ ]