Ответ Автор - wieslawlozickip5w1nd 1)-y*2y-1+3y-y*5+7y²y+3 = -2y²-1+3y²-5y+7y³+3 = 7y³+y²-5y+22)(8xy-5y+2)+(3y-3-8xy) = 8xy-5y+2+3y-3-8xy = -2y-1