6у⁷-(4у⁴+2у³-2у²-3)*4у⁵=6у⁷-(16у⁹+8у⁸-8у⁷-12у⁵)=6у⁷-16у⁹-2у⁸+8у⁷+12у⁵=6у⁷+8у⁷-16у⁹-8у⁸+12у⁵
= -16у⁹-8у⁸14у⁷+12у⁵
6у⁷-(4у⁴+2у³-2у²-3)*4у⁵=6у⁷-(16у⁹+8у⁸-8у⁷-12у⁵)=6у⁷-16у⁹-2у⁸+8у⁷+12у⁵=6у⁷+8у⁷-16у⁹-8у⁸+12у⁵
= -16у⁹-8у⁸14у⁷+12у⁵